113541557121 has 24 divisors (see below), whose sum is σ = 168468116544. Its totient is φ = 73634983200.

The previous prime is 113541557119. The next prime is 113541557141. The reversal of 113541557121 is 121755145311.

113541557121 is a `hidden beast` number, since 1 + 1 + 3 + 54 + 15 + 571 + 21 = 666.

It is not a de Polignac number, because 113541557121 - 2¹ = 113541557119 is a prime.

It is a super-2 number, since 2×113541557121² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (113541557141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1965196 + ... + 2022146.

It is an arithmetic number, because the mean of its divisors is an integer number (7019504856).

Almost surely, 2^113541557121 is an apocalyptic number.

It is an amenable number.

113541557121 is a deficient number, since it is larger than the sum of its proper divisors (54926559423).

113541557121 is a wasteful number, since it uses less digits than its factorization.

113541557121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62981 (or 62978 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

The spelling of 113541557121 in words is "one hundred thirteen billion, five hundred forty-one million, five hundred fifty-seven thousand, one hundred twenty-one".