11197372655 has 16 divisors (see below), whose sum is σ = 15585600000. Its totient is φ = 7563596832.

The previous prime is 11197372651. The next prime is 11197372661. The reversal of 11197372655 is 55627379111.

It is a cyclic number.

It is not a de Polignac number, because 11197372655 - 2² = 11197372651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197372651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385155 + ... + 2389844.

It is an arithmetic number, because the mean of its divisors is an integer number (974100000).

Almost surely, 2^11197372655 is an apocalyptic number.

11197372655 is a deficient number, since it is larger than the sum of its proper divisors (4388227345).

11197372655 is an equidigital number, since it uses as much as digits as its factorization.

11197372655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4775078.

The product of its digits is 396900, while the sum is 47.

The spelling of 11197372655 in words is "eleven billion, one hundred ninety-seven million, three hundred seventy-two thousand, six hundred fifty-five".