87635753477 has 18 divisors (see below), whose sum is σ = 89684157234. Its totient is φ = 85631032480.

The previous prime is 87635753467. The next prime is 87635753483. The reversal of 87635753477 is 77435753678.

It can be written as a sum of positive squares in 3 ways, for example, as 649689121 + 86986064356 = 25489^2 + 294934^2 .

It is not a de Polignac number, because 87635753477 - 2⁴ = 87635753461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87635753407) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 276453323 + ... + 276453639.

Almost surely, 2^87635753477 is an apocalyptic number.

It is an amenable number.

87635753477 is a deficient number, since it is larger than the sum of its proper divisors (2048403757).

87635753477 is an frugal number, since it uses more digits than its factorization.

87635753477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 561 counting only the distinct ones).

The product of its digits is 103723200, while the sum is 62.

The spelling of 87635753477 in words is "eighty-seven billion, six hundred thirty-five million, seven hundred fifty-three thousand, four hundred seventy-seven".