20047415208 has 16 divisors (see below), whose sum is σ = 50118538080. Its totient is φ = 6682471728.

The previous prime is 20047415177. The next prime is 20047415233. The reversal of 20047415208 is 80251474002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417654460 + ... + 417654507.

It is an arithmetic number, because the mean of its divisors is an integer number (3132408630).

Almost surely, 2^20047415208 is an apocalyptic number.

It is an amenable number.

20047415208 is an abundant number, since it is smaller than the sum of its proper divisors (30071122872).

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

20047415208 is a wasteful number, since it uses less digits than its factorization.

20047415208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835308976 (or 835308972 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 33.

The spelling of 20047415208 in words is "twenty billion, forty-seven million, four hundred fifteen thousand, two hundred eight".