72100012024 has 8 divisors (see below), whose sum is σ = 135187522560. Its totient is φ = 36050006008.

The previous prime is 72100011983. The next prime is 72100012027. The reversal of 72100012024 is 42021000127.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 72100011992 and 72100012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72100012027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4506250744 + ... + 4506250759.

It is an arithmetic number, because the mean of its divisors is an integer number (16898440320).

Almost surely, 2^72100012024 is an apocalyptic number.

It is an amenable number.

72100012024 is a deficient number, since it is larger than the sum of its proper divisors (63087510536).

72100012024 is a wasteful number, since it uses less digits than its factorization.

72100012024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9012501509 (or 9012501505 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The spelling of 72100012024 in words is "seventy-two billion, one hundred million, twelve thousand, twenty-four".