100720162516 has 24 divisors (see below), whose sum is σ = 177624772416. Its totient is φ = 49970550720.

The previous prime is 100720162513. The next prime is 100720162549. The reversal of 100720162516 is 615261027001.

It is a super-2 number, since 2×100720162516² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100720162513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247001 + ... + 1325311.

It is an arithmetic number, because the mean of its divisors is an integer number (7401032184).

Almost surely, 2^100720162516 is an apocalyptic number.

It is an amenable number.

100720162516 is a deficient number, since it is larger than the sum of its proper divisors (76904609900).

100720162516 is a wasteful number, since it uses less digits than its factorization.

100720162516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80799 (or 80797 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

Adding to 100720162516 its reverse (615261027001), we get a palindrome (715981189517).

The spelling of 100720162516 in words is "one hundred billion, seven hundred twenty million, one hundred sixty-two thousand, five hundred sixteen".