20645645627086 has 16 divisors (see below), whose sum is σ = 30990813609888. Its totient is φ = 10315374768000.

The previous prime is 20645645627063. The next prime is 20645645627093. The reversal of 20645645627086 is 68072654654602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219118786 + ... + 219212986.

It is an arithmetic number, because the mean of its divisors is an integer number (1936925850618).

Almost surely, 2^{20645645627086} is an apocalyptic number.

20645645627086 is a deficient number, since it is larger than the sum of its proper divisors (10345167982802).

20645645627086 is a wasteful number, since it uses less digits than its factorization.

20645645627086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172107.

The product of its (nonzero) digits is 116121600, while the sum is 61.

The spelling of 20645645627086 in words is "twenty trillion, six hundred forty-five billion, six hundred forty-five million, six hundred twenty-seven thousand, eighty-six".