21622203137670 has 32 divisors (see below), whose sum is σ = 51999844624128. Its totient is φ = 5754081159648.

The previous prime is 21622203137669. The next prime is 21622203137677. The reversal of 21622203137670 is 7673130222612.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21622203137677) 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, 739964964 + ... + 739994183.

It is an arithmetic number, because the mean of its divisors is an integer number (1624995144504).

Almost surely, 2^{21622203137670} is an apocalyptic number.

21622203137670 is an abundant number, since it is smaller than the sum of its proper divisors (30377641486458).

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

21622203137670 is a wasteful number, since it uses less digits than its factorization.

21622203137670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479959644.

The product of its (nonzero) digits is 254016, while the sum is 42.

The spelling of 21622203137670 in words is "twenty-one trillion, six hundred twenty-two billion, two hundred three million, one hundred thirty-seven thousand, six hundred seventy".