16564242622240 has 24 divisors (see below), whose sum is σ = 39133023195420. Its totient is φ = 6625697048832.

The previous prime is 16564242622231. The next prime is 16564242622247. The reversal of 16564242622240 is 4222624246561.

It can be written as a sum of positive squares in 2 ways, for example, as 14840893302544 + 1723349319696 = 3852388^2 + 1312764^2 .

It is not an unprimeable number, because it can be changed into a prime (16564242622247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51763258035 + ... + 51763258354.

Almost surely, 2^{16564242622240} is an apocalyptic number.

16564242622240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16564242622240 is an abundant number, since it is smaller than the sum of its proper divisors (22568780573180).

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

16564242622240 is a wasteful number, since it uses less digits than its factorization.

16564242622240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103526516404 (or 103526516396 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 46.

The spelling of 16564242622240 in words is "sixteen trillion, five hundred sixty-four billion, two hundred forty-two million, six hundred twenty-two thousand, two hundred forty".