20507370774 has 16 divisors (see below), whose sum is σ = 44743354560. Its totient is φ = 6214354760.

The previous prime is 20507370749. The next prime is 20507370809. The reversal of 20507370774 is 47707370502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155358804 + ... + 155358935.

It is an arithmetic number, because the mean of its divisors is an integer number (2796459660).

Almost surely, 2^20507370774 is an apocalyptic number.

20507370774 is an abundant number, since it is smaller than the sum of its proper divisors (24235983786).

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

20507370774 is a wasteful number, since it uses less digits than its factorization.

20507370774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310717755.

The product of its (nonzero) digits is 288120, while the sum is 42.

The spelling of 20507370774 in words is "twenty billion, five hundred seven million, three hundred seventy thousand, seven hundred seventy-four".