20877775077006 has 64 divisors (see below), whose sum is σ = 46781879477760. Its totient is φ = 6901391851200.

The previous prime is 20877775076989. The next prime is 20877775077079. The reversal of 20877775077006 is 60077057777802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2605450 + ... + 6967346.

It is an arithmetic number, because the mean of its divisors is an integer number (730966866840).

Almost surely, 2^{20877775077006} is an apocalyptic number.

20877775077006 is an abundant number, since it is smaller than the sum of its proper divisors (25904104400754).

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

20877775077006 is a wasteful number, since it uses less digits than its factorization.

20877775077006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362646 (or 4362640 counting only the distinct ones).

The product of its (nonzero) digits is 56471520, while the sum is 63.

The spelling of 20877775077006 in words is "twenty trillion, eight hundred seventy-seven billion, seven hundred seventy-five million, seventy-seven thousand, six".