20859619026402 has 24 divisors (see below), whose sum is σ = 48672444395484. Its totient is φ = 6418344315744.

The previous prime is 20859619026397. The next prime is 20859619026439. The reversal of 20859619026402 is 20462091695802.

20859619026402 is a `hidden beast` number, since 2 + 0 + 8 + 596 + 1 + 9 + 0 + 2 + 6 + 40 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20108309724441 + 751309301961 = 4484229^2 + 866781^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44571835293 + ... + 44571835760.

Almost surely, 2^{20859619026402} is an apocalyptic number.

20859619026402 is an abundant number, since it is smaller than the sum of its proper divisors (27812825369082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20859619026402 is a wasteful number, since it uses less digits than its factorization.

20859619026402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89143671074 (or 89143671071 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 20859619026402 in words is "twenty trillion, eight hundred fifty-nine billion, six hundred nineteen million, twenty-six thousand, four hundred two".