72411621553 has 8 divisors (see below), whose sum is σ = 73982633472. Its totient is φ = 70841873856.

The previous prime is 72411621547. The next prime is 72411621593. The reversal of 72411621553 is 35512611427.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72411621553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72411621593) 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, 199800 + ... + 429817.

It is an arithmetic number, because the mean of its divisors is an integer number (9247829184).

Almost surely, 2^72411621553 is an apocalyptic number.

It is an amenable number.

72411621553 is a deficient number, since it is larger than the sum of its proper divisors (1571011919).

72411621553 is a wasteful number, since it uses less digits than its factorization.

72411621553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632111.

The product of its digits is 50400, while the sum is 37.

The spelling of 72411621553 in words is "seventy-two billion, four hundred eleven million, six hundred twenty-one thousand, five hundred fifty-three".