20047776770 has 32 divisors (see below), whose sum is σ = 41565892608. Its totient is φ = 6819398208.

The previous prime is 20047776751. The next prime is 20047776797. The reversal of 20047776770 is 7767774002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1118657 + ... + 1136436.

It is an arithmetic number, because the mean of its divisors is an integer number (1298934144).

Almost surely, 2^20047776770 is an apocalyptic number.

20047776770 is an abundant number, since it is smaller than the sum of its proper divisors (21518115838).

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

20047776770 is a wasteful number, since it uses less digits than its factorization.

20047776770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255234.

The product of its (nonzero) digits is 806736, while the sum is 47.

The spelling of 20047776770 in words is "twenty billion, forty-seven million, seven hundred seventy-six thousand, seven hundred seventy".