87958681651 has 8 divisors (see below), whose sum is σ = 89948988864. Its totient is φ = 85980623040.

The previous prime is 87958681639. The next prime is 87958681697. The reversal of 87958681651 is 15618685978.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87958681651 - 2²³ = 87950293043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87958688651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3047626 + ... + 3076351.

It is an arithmetic number, because the mean of its divisors is an integer number (11243623608).

Almost surely, 2^87958681651 is an apocalyptic number.

87958681651 is a deficient number, since it is larger than the sum of its proper divisors (1990307213).

87958681651 is a wasteful number, since it uses less digits than its factorization.

87958681651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6124301.

The product of its digits is 29030400, while the sum is 64.

The spelling of 87958681651 in words is "eighty-seven billion, nine hundred fifty-eight million, six hundred eighty-one thousand, six hundred fifty-one".