87426331861637 has 8 divisors (see below), whose sum is σ = 89086306740000. Its totient is φ = 85772296071504.

The previous prime is 87426331861601. The next prime is 87426331861681. The reversal of 87426331861637 is 73616813362478.

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 87426331861637 - 2⁸ = 87426331861381 is a prime.

It is a super-2 number, since 2×87426331861637² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87426331861537) 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, 1484742338 + ... + 1484801219.

It is an arithmetic number, because the mean of its divisors is an integer number (11135788342500).

Almost surely, 2^{87426331861637} is an apocalyptic number.

It is an amenable number.

87426331861637 is a deficient number, since it is larger than the sum of its proper divisors (1659974878363).

87426331861637 is a wasteful number, since it uses less digits than its factorization.

87426331861637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2969544115.

The product of its digits is 146313216, while the sum is 65.

The spelling of 87426331861637 in words is "eighty-seven trillion, four hundred twenty-six billion, three hundred thirty-one million, eight hundred sixty-one thousand, six hundred thirty-seven".