72157430372503 has 16 divisors (see below), whose sum is σ = 84188469657600. Its totient is φ = 61819926869400.

The previous prime is 72157430372383. The next prime is 72157430372509. The reversal of 72157430372503 is 30527303475127.

It is not a de Polignac number, because 72157430372503 - 2³⁷ = 72019991419031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72157430372509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49103383 + ... + 50551528.

It is an arithmetic number, because the mean of its divisors is an integer number (5261779353600).

Almost surely, 2^{72157430372503} is an apocalyptic number.

72157430372503 is a deficient number, since it is larger than the sum of its proper divisors (12031039285097).

72157430372503 is an equidigital number, since it uses as much as digits as its factorization.

72157430372503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99657043 (or 99657029 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 49.

The spelling of 72157430372503 in words is "seventy-two trillion, one hundred fifty-seven billion, four hundred thirty million, three hundred seventy-two thousand, five hundred three".