20507474372 has 24 divisors (see below), whose sum is σ = 44743581120. Its totient is φ = 7989924960.

The previous prime is 20507474371. The next prime is 20507474399. The reversal of 20507474372 is 27347470502.

It is not an unprimeable number, because it can be changed into a prime (20507474371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33291047 + ... + 33291662.

It is an arithmetic number, because the mean of its divisors is an integer number (1864315880).

Almost surely, 2^20507474372 is an apocalyptic number.

20507474372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20507474372 is an abundant number, since it is smaller than the sum of its proper divisors (24236106748).

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

20507474372 is a wasteful number, since it uses less digits than its factorization.

20507474372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66582731 (or 66582729 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 41.

The spelling of 20507474372 in words is "twenty billion, five hundred seven million, four hundred seventy-four thousand, three hundred seventy-two".