21231192640170 has 16 divisors (see below), whose sum is σ = 50954862336480. Its totient is φ = 5661651370704.

The previous prime is 21231192640169. The next prime is 21231192640199. The reversal of 21231192640170 is 7104629113212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353853210640 + ... + 353853210699.

It is an arithmetic number, because the mean of its divisors is an integer number (3184678896030).

Almost surely, 2^{21231192640170} is an apocalyptic number.

21231192640170 is an abundant number, since it is smaller than the sum of its proper divisors (29723669696310).

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

21231192640170 is a wasteful number, since it uses less digits than its factorization.

21231192640170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707706421349.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 21231192640170 in words is "twenty-one trillion, two hundred thirty-one billion, one hundred ninety-two million, six hundred forty thousand, one hundred seventy".