21346969170 has 32 divisors (see below), whose sum is σ = 51475550400. Its totient is φ = 5665544640.

The previous prime is 21346969157. The next prime is 21346969177. The reversal of 21346969170 is 7196964312.

It is not an unprimeable number, because it can be changed into a prime (21346969177) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1679845 + ... + 1692504.

It is an arithmetic number, because the mean of its divisors is an integer number (1608610950).

Almost surely, 2^21346969170 is an apocalyptic number.

21346969170 is an abundant number, since it is smaller than the sum of its proper divisors (30128581230).

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

21346969170 is a wasteful number, since it uses less digits than its factorization.

21346969170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372570.

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 21346969170 in words is "twenty-one billion, three hundred forty-six million, nine hundred sixty-nine thousand, one hundred seventy".