11811622997157 has 16 divisors (see below), whose sum is σ = 15869329679808. Its totient is φ = 7814167936640.

The previous prime is 11811622997117. The next prime is 11811622997191. The reversal of 11811622997157 is 75179922611811.

It is a cyclic number.

It is not a de Polignac number, because 11811622997157 - 2³⁰ = 11810549255333 is a prime.

It is a super-2 number, since 2×11811622997157² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11811622997157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11811622997117) 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, 25255513 + ... + 25718945.

It is an arithmetic number, because the mean of its divisors is an integer number (991833104988).

Almost surely, 2^{11811622997157} is an apocalyptic number.

It is an amenable number.

11811622997157 is a deficient number, since it is larger than the sum of its proper divisors (4057706682651).

11811622997157 is a wasteful number, since it uses less digits than its factorization.

11811622997157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528420.

The product of its digits is 3810240, while the sum is 60.

The spelling of 11811622997157 in words is "eleven trillion, eight hundred eleven billion, six hundred twenty-two million, nine hundred ninety-seven thousand, one hundred fifty-seven".