53087439657 has 16 divisors (see below), whose sum is σ = 80919713792. Its totient is φ = 30326466960.

The previous prime is 53087439637. The next prime is 53087439677. The reversal of 53087439657 is 75693478035.

It is an interprime number because it is at equal distance from previous prime (53087439637) and next prime (53087439677).

It is not a de Polignac number, because 53087439657 - 2⁶ = 53087439593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53087439597 and 53087439606.

It is not an unprimeable number, because it can be changed into a prime (53087439637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312769 + ... + 451662.

It is an arithmetic number, because the mean of its divisors is an integer number (5057482112).

Almost surely, 2^53087439657 is an apocalyptic number.

It is an amenable number.

53087439657 is a deficient number, since it is larger than the sum of its proper divisors (27832274135).

53087439657 is a wasteful number, since it uses less digits than its factorization.

53087439657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767748.

The product of its (nonzero) digits is 19051200, while the sum is 57.

The spelling of 53087439657 in words is "fifty-three billion, eighty-seven million, four hundred thirty-nine thousand, six hundred fifty-seven".