20162144915979 has 64 divisors (see below), whose sum is σ = 30488038156800. Its totient is φ = 11744336517120.

The previous prime is 20162144915921. The next prime is 20162144915999. The reversal of 20162144915979 is 97951944126102.

It is not a de Polignac number, because 20162144915979 - 2⁷ = 20162144915851 is a prime.

It is a super-2 number, since 2×20162144915979² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20162144915999) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45374707 + ... + 45816899.

It is an arithmetic number, because the mean of its divisors is an integer number (476375596200).

Almost surely, 2^{20162144915979} is an apocalyptic number.

20162144915979 is a deficient number, since it is larger than the sum of its proper divisors (10325893240821).

20162144915979 is a wasteful number, since it uses less digits than its factorization.

20162144915979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442700.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 20162144915979 in words is "twenty trillion, one hundred sixty-two billion, one hundred forty-four million, nine hundred fifteen thousand, nine hundred seventy-nine".