72999999999 has 24 divisors (see below), whose sum is σ = 111697447680. Its totient is φ = 45783249408.

The previous prime is 72999999973. The next prime is 73000000019. The reversal of 72999999999 is 99999999927.

It is not a de Polignac number, because 72999999999 - 2⁵ = 72999999967 is a prime.

72999999999 is a modest number, since divided by 999999 gives 72999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72999999899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236019 + ... + 449115.

It is an arithmetic number, because the mean of its divisors is an integer number (4654060320).

Almost surely, 2^72999999999 is an apocalyptic number.

72999999999 is a deficient number, since it is larger than the sum of its proper divisors (38697447681).

72999999999 is a wasteful number, since it uses less digits than its factorization.

72999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215359 (or 215356 counting only the distinct ones).

The product of its digits is 5423886846, while the sum is 90.

The spelling of 72999999999 in words is "seventy-two billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".