20776125775 has 48 divisors (see below), whose sum is σ = 26930776320. Its totient is φ = 15885689600.

The previous prime is 20776125767. The next prime is 20776125803. The reversal of 20776125775 is 57752167702.

It is a happy number.

It is not a de Polignac number, because 20776125775 - 2³ = 20776125767 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30418584 + ... + 30419266.

It is an arithmetic number, because the mean of its divisors is an integer number (561057840).

Almost surely, 2^20776125775 is an apocalyptic number.

20776125775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20776125775 is a deficient number, since it is larger than the sum of its proper divisors (6154650545).

20776125775 is a wasteful number, since it uses less digits than its factorization.

20776125775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 1440600, while the sum is 49.

The spelling of 20776125775 in words is "twenty billion, seven hundred seventy-six million, one hundred twenty-five thousand, seven hundred seventy-five".