72157430372502 has 32 divisors (see below), whose sum is σ = 146164158241920. Its totient is φ = 23744699288640.

The previous prime is 72157430372383. The next prime is 72157430372509. The reversal of 72157430372502 is 20527303475127.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54184852 + ... + 55500567.

It is an arithmetic number, because the mean of its divisors is an integer number (4567629945060).

Almost surely, 2^{72157430372502} is an apocalyptic number.

72157430372502 is an abundant number, since it is smaller than the sum of its proper divisors (74006727869418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72157430372502 is a wasteful number, since it uses less digits than its factorization.

72157430372502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109686828.

The product of its (nonzero) digits is 2469600, while the sum is 48.

The spelling of 72157430372502 in words is "seventy-two trillion, one hundred fifty-seven billion, four hundred thirty million, three hundred seventy-two thousand, five hundred two".