85401553924 has 12 divisors (see below), whose sum is σ = 149633005900. Its totient is φ = 42649266528.

The previous prime is 85401553891. The next prime is 85401553931. The reversal of 85401553924 is 42935510458.

It can be written as a sum of positive squares in 2 ways, for example, as 36953141824 + 48448412100 = 192232^2 + 220110^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12873879 + ... + 12880510.

Almost surely, 2^85401553924 is an apocalyptic number.

It is an amenable number.

85401553924 is a deficient number, since it is larger than the sum of its proper divisors (64231451976).

85401553924 is a wasteful number, since it uses less digits than its factorization.

85401553924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25755222 (or 25755220 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 85401553924 in words is "eighty-five billion, four hundred one million, five hundred fifty-three thousand, nine hundred twenty-four".