87590542465 has 12 divisors (see below), whose sum is σ = 109877288724. Its totient is φ = 67025804384.

The previous prime is 87590542463. The next prime is 87590542477. The reversal of 87590542465 is 56424509578.

It can be written as a sum of positive squares in 2 ways, for example, as 66880166544 + 20710375921 = 258612^2 + 143911^2 .

It is not a de Polignac number, because 87590542465 - 2¹ = 87590542463 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87590542463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16555114 + ... + 16560403.

It is an arithmetic number, because the mean of its divisors is an integer number (9156440727).

Almost surely, 2^87590542465 is an apocalyptic number.

It is an amenable number.

87590542465 is a deficient number, since it is larger than the sum of its proper divisors (22286746259).

87590542465 is a wasteful number, since it uses less digits than its factorization.

87590542465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33115568 (or 33115545 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 87590542465 in words is "eighty-seven billion, five hundred ninety million, five hundred forty-two thousand, four hundred sixty-five".