11698438408804 has 135 divisors (see below), whose sum is σ = 25382770082187. Its totient is φ = 4716399405312.

The previous prime is 11698438408801. The next prime is 11698438408807. The reversal of 11698438408804 is 40880483489611.

The square root of 11698438408804 is 3420298.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (11698438408801) and next prime (11698438408807).

It can be written as a sum of positive squares in 4 ways, for example, as 1099767495204 + 10598670913600 = 1048698^2 + 3255560^2 .

It is a super-2 number, since 2×11698438408804² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11698438408801) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5698215442 + ... + 5698217494.

Almost surely, 2^{11698438408804} is an apocalyptic number.

11698438408804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

11698438408804 is the 3420298-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11698438408804

11698438408804 is an abundant number, since it is smaller than the sum of its proper divisors (13684331673383).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11698438408804 is an frugal number, since it uses more digits than its factorization.

11698438408804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 64.

Multiplying 11698438408804 by its sum of digits (64), we get a square (748700058163456 = 27362384²).

The spelling of 11698438408804 in words is "eleven trillion, six hundred ninety-eight billion, four hundred thirty-eight million, four hundred eight thousand, eight hundred four".