859813890554 has 4 divisors (see below), whose sum is σ = 1289720835834. Its totient is φ = 429906945276.

The previous prime is 859813890499. The next prime is 859813890613. The reversal of 859813890554 is 455098318958.

859813890554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 455098318958 = 2 ⋅227549159479.

It can be written as a sum of positive squares in only one way, i.e., 804567738529 + 55246152025 = 896977^2 + 235045^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214953472637 + ... + 214953472640.

Almost surely, 2^859813890554 is an apocalyptic number.

859813890554 is a deficient number, since it is larger than the sum of its proper divisors (429906945280).

859813890554 is a wasteful number, since it uses less digits than its factorization.

859813890554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429906945279.

The product of its (nonzero) digits is 62208000, while the sum is 65.

The spelling of 859813890554 in words is "eight hundred fifty-nine billion, eight hundred thirteen million, eight hundred ninety thousand, five hundred fifty-four".