11572102155 has 16 divisors (see below), whose sum is σ = 18524655360. Its totient is φ = 6168690528.

The previous prime is 11572102121. The next prime is 11572102159. The reversal of 11572102155 is 55120127511.

It is not a de Polignac number, because 11572102155 - 2⁷ = 11572102027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11572102159) 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, 162535 + ... + 222624.

It is an arithmetic number, because the mean of its divisors is an integer number (1157790960).

Almost surely, 2^11572102155 is an apocalyptic number.

11572102155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11572102155 is a deficient number, since it is larger than the sum of its proper divisors (6952553205).

11572102155 is a wasteful number, since it uses less digits than its factorization.

11572102155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387170.

The product of its (nonzero) digits is 3500, while the sum is 30.

Adding to 11572102155 its reverse (55120127511), we get a palindrome (66692229666).

The spelling of 11572102155 in words is "eleven billion, five hundred seventy-two million, one hundred two thousand, one hundred fifty-five".