87320124802 has 4 divisors (see below), whose sum is σ = 130980187206. Its totient is φ = 43660062400.

The previous prime is 87320124757. The next prime is 87320124839. The reversal of 87320124802 is 20842102378.

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

It can be written as a sum of positive squares in only one way, i.e., 82518882121 + 4801242681 = 287261^2 + 69291^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21830031199 + ... + 21830031202.

Almost surely, 2^87320124802 is an apocalyptic number.

87320124802 is a deficient number, since it is larger than the sum of its proper divisors (43660062404).

87320124802 is a wasteful number, since it uses less digits than its factorization.

87320124802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43660062403.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 87320124802 in words is "eighty-seven billion, three hundred twenty million, one hundred twenty-four thousand, eight hundred two".