20477665274 has 16 divisors (see below), whose sum is σ = 33517034496. Its totient is φ = 9305772000.

The previous prime is 20477665267. The next prime is 20477665331. The reversal of 20477665274 is 47256677402.

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, 18362 + ... + 203205.

It is an arithmetic number, because the mean of its divisors is an integer number (2094814656).

Almost surely, 2^20477665274 is an apocalyptic number.

20477665274 is a deficient number, since it is larger than the sum of its proper divisors (13039369222).

20477665274 is a wasteful number, since it uses less digits than its factorization.

20477665274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225781.

The product of its (nonzero) digits is 3951360, while the sum is 50.

The spelling of 20477665274 in words is "twenty billion, four hundred seventy-seven million, six hundred sixty-five thousand, two hundred seventy-four".