20678724274 has 32 divisors (see below), whose sum is σ = 33588515520. Its totient is φ = 9491435712.

The previous prime is 20678724263. The next prime is 20678724281. The reversal of 20678724274 is 47242787602.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 7637629 + ... + 7640335.

It is an arithmetic number, because the mean of its divisors is an integer number (1049641110).

Almost surely, 2^20678724274 is an apocalyptic number.

20678724274 is a deficient number, since it is larger than the sum of its proper divisors (12909791246).

20678724274 is a wasteful number, since it uses less digits than its factorization.

20678724274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234.

The product of its (nonzero) digits is 2107392, while the sum is 49.

The spelling of 20678724274 in words is "twenty billion, six hundred seventy-eight million, seven hundred twenty-four thousand, two hundred seventy-four".