20754948975 has 48 divisors (see below), whose sum is σ = 35064969984. Its totient is φ = 10829728000.

The previous prime is 20754948971. The next prime is 20754949009. The reversal of 20754948975 is 57984945702.

It is not a de Polignac number, because 20754948975 - 2² = 20754948971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20754948971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 682699 + ... + 712451.

It is an arithmetic number, because the mean of its divisors is an integer number (730520208).

Almost surely, 2^20754948975 is an apocalyptic number.

20754948975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20754948975 is a deficient number, since it is larger than the sum of its proper divisors (14310021009).

20754948975 is a wasteful number, since it uses less digits than its factorization.

20754948975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29968 (or 29963 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 60.

The spelling of 20754948975 in words is "twenty billion, seven hundred fifty-four million, nine hundred forty-eight thousand, nine hundred seventy-five".