20011506774 has 32 divisors (see below), whose sum is σ = 45748039680. Its totient is φ = 5716641792.

The previous prime is 20011506761. The next prime is 20011506793. The reversal of 20011506774 is 47760511002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246742 + ... + 317654.

It is an arithmetic number, because the mean of its divisors is an integer number (1429626240).

Almost surely, 2^20011506774 is an apocalyptic number.

20011506774 is an abundant number, since it is smaller than the sum of its proper divisors (25736532906).

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

20011506774 is a wasteful number, since it uses less digits than its factorization.

20011506774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77644.

The product of its (nonzero) digits is 11760, while the sum is 33.

The spelling of 20011506774 in words is "twenty billion, eleven million, five hundred six thousand, seven hundred seventy-four".