113156072437 has 4 divisors (see below), whose sum is σ = 113327262316. Its totient is φ = 112984882560.

The previous prime is 113156072431. The next prime is 113156072501. The reversal of 113156072437 is 734270651311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 734270651311 = 11471 ⋅64011041.

It can be written as a sum of positive squares in 2 ways, for example, as 89648743396 + 23507329041 = 299414^2 + 153321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113156072437 is a prime.

It is a super-2 number, since 2×113156072437² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 113156072437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113156072431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85593948 + ... + 85595269.

It is an arithmetic number, because the mean of its divisors is an integer number (28331815579).

Almost surely, 2^113156072437 is an apocalyptic number.

It is an amenable number.

113156072437 is a deficient number, since it is larger than the sum of its proper divisors (171189879).

113156072437 is an equidigital number, since it uses as much as digits as its factorization.

113156072437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171189878.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 113156072437 in words is "one hundred thirteen billion, one hundred fifty-six million, seventy-two thousand, four hundred thirty-seven".