87050946637 has 2 divisors, whose sum is σ = 87050946638. Its totient is φ = 87050946636.

The previous prime is 87050946613. The next prime is 87050946737. The reversal of 87050946637 is 73664905078.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50077040841 + 36973905796 = 223779^2 + 192286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87050946637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87050946337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43525473318 + 43525473319.

It is an arithmetic number, because the mean of its divisors is an integer number (43525473319).

Almost surely, 2^87050946637 is an apocalyptic number.

It is an amenable number.

87050946637 is a deficient number, since it is larger than the sum of its proper divisors (1).

87050946637 is an equidigital number, since it uses as much as digits as its factorization.

87050946637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 87050946637 in words is "eighty-seven billion, fifty million, nine hundred forty-six thousand, six hundred thirty-seven".