87311881445537 has 16 divisors (see below), whose sum is σ = 99845360160000. Its totient is φ = 74793503107008.

The previous prime is 87311881445491. The next prime is 87311881445543. The reversal of 87311881445537 is 73554418811378.

It is not a de Polignac number, because 87311881445537 - 2¹² = 87311881441441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87311881442537) 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, 86174003 + ... + 87181319.

It is an arithmetic number, because the mean of its divisors is an integer number (6240335010000).

Almost surely, 2^{87311881445537} is an apocalyptic number.

It is an amenable number.

87311881445537 is a deficient number, since it is larger than the sum of its proper divisors (12533478714463).

87311881445537 is a wasteful number, since it uses less digits than its factorization.

87311881445537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014800.

The product of its digits is 90316800, while the sum is 65.

The spelling of 87311881445537 in words is "eighty-seven trillion, three hundred eleven billion, eight hundred eighty-one million, four hundred forty-five thousand, five hundred thirty-seven".