21776088774 has 32 divisors (see below), whose sum is σ = 47526549120. Its totient is φ = 6596720000.

The previous prime is 21776088757. The next prime is 21776088781. The reversal of 21776088774 is 47788067712.

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 15 ways as a sum of consecutive naturals, for example, 163822 + ... + 265310.

It is an arithmetic number, because the mean of its divisors is an integer number (1485204660).

Almost surely, 2^21776088774 is an apocalyptic number.

21776088774 is an abundant number, since it is smaller than the sum of its proper divisors (25750460346).

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

21776088774 is a wasteful number, since it uses less digits than its factorization.

21776088774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104756.

The product of its (nonzero) digits is 7375872, while the sum is 57.

The spelling of 21776088774 in words is "twenty-one billion, seven hundred seventy-six million, eighty-eight thousand, seven hundred seventy-four".