28018347351696 has 135 divisors (see below), whose sum is σ = 84910667262057. Its totient is φ = 8620775879040.

The previous prime is 28018347351641. The next prime is 28018347351707. The reversal of 28018347351696 is 69615374381082.

The square root of 28018347351696 is 5293236.

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

28018347351696 is a `hidden beast` number, since 2 + 8 + 0 + 18 + 34 + 73 + 516 + 9 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4144725939600 + 23873621412096 = 2035860^2 + 4886064^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 825727851 + ... + 825761781.

It is a 1-persistent number, because it is pandigital, but 2⋅28018347351696 = 56036694703392 is not.

Almost surely, 2^{28018347351696} is an apocalyptic number.

28018347351696 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28018347351696 is the 5293236-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28018347351696

28018347351696 is an abundant number, since it is smaller than the sum of its proper divisors (56892319910361).

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

28018347351696 is an frugal number, since it uses more digits than its factorization.

28018347351696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67902 (or 33949 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 28018347351696 in words is "twenty-eight trillion, eighteen billion, three hundred forty-seven million, three hundred fifty-one thousand, six hundred ninety-six".