21770634330 has 64 divisors (see below), whose sum is σ = 58078788480. Its totient is φ = 5803126272.

The previous prime is 21770634247. The next prime is 21770634371. The reversal of 21770634330 is 3343607712.

21770634330 is a `hidden beast` number, since 2 + 17 + 7 + 0 + 634 + 3 + 3 + 0 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 702217 + ... + 732563.

It is an arithmetic number, because the mean of its divisors is an integer number (907481070).

Almost surely, 2^21770634330 is an apocalyptic number.

21770634330 is an abundant number, since it is smaller than the sum of its proper divisors (36308154150).

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

21770634330 is a wasteful number, since it uses less digits than its factorization.

21770634330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33020 (or 33014 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

It can be divided in two parts, 21770 and 634330, that added together give a square (656100 = 810²).

The spelling of 21770634330 in words is "twenty-one billion, seven hundred seventy million, six hundred thirty-four thousand, three hundred thirty".