72157301507 has 8 divisors (see below), whose sum is σ = 73727047584. Its totient is φ = 70595269888.

The previous prime is 72157301473. The next prime is 72157301537. The reversal of 72157301507 is 70510375127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72157301507 - 2¹² = 72157297411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72157301537) 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, 1909703 + ... + 1947120.

It is an arithmetic number, because the mean of its divisors is an integer number (9215880948).

Almost surely, 2^72157301507 is an apocalyptic number.

72157301507 is a deficient number, since it is larger than the sum of its proper divisors (1569746077).

72157301507 is a wasteful number, since it uses less digits than its factorization.

72157301507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857229.

The product of its (nonzero) digits is 51450, while the sum is 38.

The spelling of 72157301507 in words is "seventy-two billion, one hundred fifty-seven million, three hundred one thousand, five hundred seven".