20763768974 has 16 divisors (see below), whose sum is σ = 35306814480. Its totient is φ = 9078894720.

The previous prime is 20763768973. The next prime is 20763768979. The reversal of 20763768974 is 47986736702.

It is a super-2 number, since 2×20763768974² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20763768973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21015467 + ... + 21016454.

It is an arithmetic number, because the mean of its divisors is an integer number (2206675905).

Almost surely, 2^20763768974 is an apocalyptic number.

20763768974 is a deficient number, since it is larger than the sum of its proper divisors (14543045506).

20763768974 is a wasteful number, since it uses less digits than its factorization.

20763768974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42031955.

The product of its (nonzero) digits is 21337344, while the sum is 59.

The spelling of 20763768974 in words is "twenty billion, seven hundred sixty-three million, seven hundred sixty-eight thousand, nine hundred seventy-four".