87920627953 has 4 divisors (see below), whose sum is σ = 88238031220. Its totient is φ = 87603224688.

The previous prime is 87920627947. The next prime is 87920628041. The reversal of 87920627953 is 35972602978.

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 27467095824 + 60453532129 = 165732^2 + 245873^2 .

It is a cyclic number.

It is not a de Polignac number, because 87920627953 - 2²¹ = 87918530801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87920627903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158701218 + ... + 158701771.

It is an arithmetic number, because the mean of its divisors is an integer number (22059507805).

Almost surely, 2^87920627953 is an apocalyptic number.

It is an amenable number.

87920627953 is a deficient number, since it is larger than the sum of its proper divisors (317403267).

87920627953 is a wasteful number, since it uses less digits than its factorization.

87920627953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317403266.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 87920627953 in words is "eighty-seven billion, nine hundred twenty million, six hundred twenty-seven thousand, nine hundred fifty-three".