87557487408784 has 20 divisors (see below), whose sum is σ = 169647043817020. Its totient is φ = 43777605133440.

The previous prime is 87557487408709. The next prime is 87557487408847. The reversal of 87557487408784 is 48780478475578.

It can be written as a sum of positive squares in 2 ways, for example, as 60103240906384 + 27454246502400 = 7752628^2 + 5239680^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87557487408698 and 87557487408707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70526079 + ... + 71756830.

It is an arithmetic number, because the mean of its divisors is an integer number (8482352190851).

Almost surely, 2^{87557487408784} is an apocalyptic number.

It is an amenable number.

87557487408784 is a deficient number, since it is larger than the sum of its proper divisors (82089556408236).

87557487408784 is a wasteful number, since it uses less digits than its factorization.

87557487408784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142321378 (or 142321372 counting only the distinct ones).

The product of its (nonzero) digits is 15735193600, while the sum is 82.

The spelling of 87557487408784 in words is "eighty-seven trillion, five hundred fifty-seven billion, four hundred eighty-seven million, four hundred eight thousand, seven hundred eighty-four".