20633664774 has 16 divisors (see below), whose sum is σ = 41297534208. Its totient is φ = 6872854152.

The previous prime is 20633664731. The next prime is 20633664781. The reversal of 20633664774 is 47746633602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1249642 + ... + 1266045.

It is an arithmetic number, because the mean of its divisors is an integer number (2581095888).

Almost surely, 2^20633664774 is an apocalyptic number.

20633664774 is an abundant number, since it is smaller than the sum of its proper divisors (20663869434).

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

20633664774 is a wasteful number, since it uses less digits than its factorization.

20633664774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517059.

The product of its (nonzero) digits is 3048192, while the sum is 48.

The spelling of 20633664774 in words is "twenty billion, six hundred thirty-three million, six hundred sixty-four thousand, seven hundred seventy-four".