72435242170403 has 16 divisors (see below), whose sum is σ = 87653230467264. Its totient is φ = 58434819717120.

The previous prime is 72435242170381. The next prime is 72435242170409. The reversal of 72435242170403 is 30407124253427.

It is not a de Polignac number, because 72435242170403 - 2¹² = 72435242166307 is a prime.

It is a super-2 number, since 2×72435242170403² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72435242170409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20369483 + ... + 23659803.

It is an arithmetic number, because the mean of its divisors is an integer number (5478326904204).

Almost surely, 2^{72435242170403} is an apocalyptic number.

72435242170403 is a deficient number, since it is larger than the sum of its proper divisors (15217988296861).

72435242170403 is a wasteful number, since it uses less digits than its factorization.

72435242170403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3475342.

The product of its (nonzero) digits is 1128960, while the sum is 44.

The spelling of 72435242170403 in words is "seventy-two trillion, four hundred thirty-five billion, two hundred forty-two million, one hundred seventy thousand, four hundred three".