72154433269 has 4 divisors (see below), whose sum is σ = 75952035040. Its totient is φ = 68356831500.

The previous prime is 72154433257. The next prime is 72154433291. The reversal of 72154433269 is 96233445127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72154433269 - 2¹¹ = 72154431221 is a prime.

It is a super-2 number, since 2×72154433269² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72155433269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898800857 + ... + 1898800894.

It is an arithmetic number, because the mean of its divisors is an integer number (18988008760).

Almost surely, 2^72154433269 is an apocalyptic number.

It is an amenable number.

72154433269 is a deficient number, since it is larger than the sum of its proper divisors (3797601771).

72154433269 is a wasteful number, since it uses less digits than its factorization.

72154433269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797601770.

The product of its digits is 1088640, while the sum is 46.

The spelling of 72154433269 in words is "seventy-two billion, one hundred fifty-four million, four hundred thirty-three thousand, two hundred sixty-nine".