72435242170447 has 16 divisors (see below), whose sum is σ = 79436863779840. Its totient is φ = 65645741196000.

The previous prime is 72435242170409. The next prime is 72435242170493. The reversal of 72435242170447 is 74407124253427.

It is a cyclic number.

It is not a de Polignac number, because 72435242170447 - 2²⁷ = 72435107952719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72435242170394 and 72435242170403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72435242170847) 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, 163959429 + ... + 164400622.

It is an arithmetic number, because the mean of its divisors is an integer number (4964803986240).

Almost surely, 2^{72435242170447} is an apocalyptic number.

72435242170447 is a deficient number, since it is larger than the sum of its proper divisors (7001621609393).

72435242170447 is a wasteful number, since it uses less digits than its factorization.

72435242170447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328360374.

The product of its (nonzero) digits is 10536960, while the sum is 52.

The spelling of 72435242170447 in words is "seventy-two trillion, four hundred thirty-five billion, two hundred forty-two million, one hundred seventy thousand, four hundred forty-seven".