85087652477 has 4 divisors (see below), whose sum is σ = 87162961116. Its totient is φ = 83012343840.

The previous prime is 85087652453. The next prime is 85087652479. The reversal of 85087652477 is 77425678058.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46134314521 + 38953337956 = 214789^2 + 197366^2 .

It is a cyclic number.

It is not a de Polignac number, because 85087652477 - 2⁶ = 85087652413 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 (85087652479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1037654258 + ... + 1037654339.

It is an arithmetic number, because the mean of its divisors is an integer number (21790740279).

Almost surely, 2^85087652477 is an apocalyptic number.

It is an amenable number.

85087652477 is a deficient number, since it is larger than the sum of its proper divisors (2075308639).

85087652477 is a wasteful number, since it uses less digits than its factorization.

85087652477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075308638.

The product of its (nonzero) digits is 26342400, while the sum is 59.

The spelling of 85087652477 in words is "eighty-five billion, eighty-seven million, six hundred fifty-two thousand, four hundred seventy-seven".