11897573776 has 135 divisors (see below), whose sum is σ = 26435434977. Its totient is φ = 5183291520.

The previous prime is 11897573771. The next prime is 11897573783. The reversal of 11897573776 is 67737579811.

The square root of 11897573776 is 109076.

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

It can be written as a sum of positive squares in only one way, i.e., 10646112400 + 1251461376 = 103180^2 + 35376^2 .

It is not an unprimeable number, because it can be changed into a prime (11897573771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 177575695 + ... + 177575761.

Almost surely, 2^11897573776 is an apocalyptic number.

11897573776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11897573776 is the 109076-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11897573776

11897573776 is an abundant number, since it is smaller than the sum of its proper divisors (14537861201).

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

11897573776 is an equidigital number, since it uses as much as digits as its factorization.

11897573776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 117 counting only the distinct ones).

The product of its digits is 15558480, while the sum is 61.

The spelling of 11897573776 in words is "eleven billion, eight hundred ninety-seven million, five hundred seventy-three thousand, seven hundred seventy-six".