11800728690 has 32 divisors (see below), whose sum is σ = 28329215616. Its totient is φ = 3146031360.

The previous prime is 11800728679. The next prime is 11800728701. The reversal of 11800728690 is 9682700811.

It is an interprime number because it is at equal distance from previous prime (11800728679) and next prime (11800728701).

It is a super-2 number, since 2×11800728690² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68410 + ... + 168170.

It is an arithmetic number, because the mean of its divisors is an integer number (885287988).

Almost surely, 2^11800728690 is an apocalyptic number.

11800728690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11800728690 is an abundant number, since it is smaller than the sum of its proper divisors (16528486926).

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

11800728690 is a wasteful number, since it uses less digits than its factorization.

11800728690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103714.

The product of its (nonzero) digits is 48384, while the sum is 42.

The spelling of 11800728690 in words is "eleven billion, eight hundred million, seven hundred twenty-eight thousand, six hundred ninety".