86887454644 has 6 divisors (see below), whose sum is σ = 152053045634. Its totient is φ = 43443727320.

The previous prime is 86887454629. The next prime is 86887454701. The reversal of 86887454644 is 44645478868.

It can be written as a sum of positive squares in only one way, i.e., 79517232144 + 7370222500 = 281988^2 + 85850^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10860931827 + ... + 10860931834.

Almost surely, 2^86887454644 is an apocalyptic number.

It is an amenable number.

86887454644 is a deficient number, since it is larger than the sum of its proper divisors (65165590990).

86887454644 is a wasteful number, since it uses less digits than its factorization.

86887454644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721863665 (or 21721863663 counting only the distinct ones).

The product of its digits is 165150720, while the sum is 64.

The spelling of 86887454644 in words is "eighty-six billion, eight hundred eighty-seven million, four hundred fifty-four thousand, six hundred forty-four".