21770348834 has 8 divisors (see below), whose sum is σ = 35167486620. Its totient is φ = 10047853296.

The previous prime is 21770348813. The next prime is 21770348849. The reversal of 21770348834 is 43884307712.

21770348834 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 21757725025 + 12623809 = 147505^2 + 3553^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418660529 + ... + 418660580.

Almost surely, 2^21770348834 is an apocalyptic number.

21770348834 is a deficient number, since it is larger than the sum of its proper divisors (13397137786).

21770348834 is a wasteful number, since it uses less digits than its factorization.

21770348834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 837321124.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 21770348834 in words is "twenty-one billion, seven hundred seventy million, three hundred forty-eight thousand, eight hundred thirty-four".