20395906776 has 48 divisors (see below), whose sum is σ = 63130189200. Its totient is φ = 5827401792.

The previous prime is 20395906753. The next prime is 20395906777. The reversal of 20395906776 is 67760959302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20395906777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20233531 + ... + 20234538.

It is an arithmetic number, because the mean of its divisors is an integer number (1315212275).

Almost surely, 2^20395906776 is an apocalyptic number.

It is an amenable number.

20395906776 is an abundant number, since it is smaller than the sum of its proper divisors (42734282424).

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

20395906776 is a wasteful number, since it uses less digits than its factorization.

20395906776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40468088 (or 40468081 counting only the distinct ones).

The product of its (nonzero) digits is 4286520, while the sum is 54.

The spelling of 20395906776 in words is "twenty billion, three hundred ninety-five million, nine hundred six thousand, seven hundred seventy-six".