21372101774570 has 64 divisors (see below), whose sum is σ = 38816288501760. Its totient is φ = 8472212884800.

The previous prime is 21372101774533. The next prime is 21372101774591. The reversal of 21372101774570 is 7547710127312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1482210821 + ... + 1482225239.

It is an arithmetic number, because the mean of its divisors is an integer number (606504507840).

Almost surely, 2^{21372101774570} is an apocalyptic number.

21372101774570 is a deficient number, since it is larger than the sum of its proper divisors (17444186727190).

21372101774570 is a wasteful number, since it uses less digits than its factorization.

21372101774570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17571.

The product of its (nonzero) digits is 576240, while the sum is 47.

The spelling of 21372101774570 in words is "twenty-one trillion, three hundred seventy-two billion, one hundred one million, seven hundred seventy-four thousand, five hundred seventy".