20777105102 has 16 divisors (see below), whose sum is σ = 34277124672. Its totient is φ = 9385402080.

The previous prime is 20777105099. The next prime is 20777105161. The reversal of 20777105102 is 20150177702.

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, 8500049 + ... + 8502492.

It is an arithmetic number, because the mean of its divisors is an integer number (2142320292).

Almost surely, 2^20777105102 is an apocalyptic number.

20777105102 is a deficient number, since it is larger than the sum of its proper divisors (13500019570).

20777105102 is a wasteful number, since it uses less digits than its factorization.

20777105102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002603.

The product of its (nonzero) digits is 6860, while the sum is 32.

The spelling of 20777105102 in words is "twenty billion, seven hundred seventy-seven million, one hundred five thousand, one hundred two".