20407877552 has 40 divisors (see below), whose sum is σ = 41277477120. Its totient is φ = 9756014400.

The previous prime is 20407877537. The next prime is 20407877563. The reversal of 20407877552 is 25577870402.

It is a junction number, because it is equal to n+sod(n) for n = 20407877497 and 20407877506.

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, 927899 + ... + 949637.

It is an arithmetic number, because the mean of its divisors is an integer number (1031936928).

Almost surely, 2^20407877552 is an apocalyptic number.

It is an amenable number.

20407877552 is an abundant number, since it is smaller than the sum of its proper divisors (20869599568).

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

20407877552 is a wasteful number, since it uses less digits than its factorization.

20407877552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24321 (or 24315 counting only the distinct ones).

The product of its (nonzero) digits is 1097600, while the sum is 47.

The spelling of 20407877552 in words is "twenty billion, four hundred seven million, eight hundred seventy-seven thousand, five hundred fifty-two".