72430132662533 has 4 divisors (see below), whose sum is σ = 72430181299788. Its totient is φ = 72430084025280.

The previous prime is 72430132662493. The next prime is 72430132662553. The reversal of 72430132662533 is 33526623103427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55819755872644 + 16610376789889 = 7471262^2 + 4075583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72430132662533 is a prime.

It is a super-2 number, since 2×72430132662533² (a number of 29 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 (72430132662553) 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, 22011908 + ... + 25087533.

It is an arithmetic number, because the mean of its divisors is an integer number (18107545324947).

Almost surely, 2^{72430132662533} is an apocalyptic number.

It is an amenable number.

72430132662533 is a deficient number, since it is larger than the sum of its proper divisors (48637255).

72430132662533 is a wasteful number, since it uses less digits than its factorization.

72430132662533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48637254.

The product of its (nonzero) digits is 3265920, while the sum is 47.

The spelling of 72430132662533 in words is "seventy-two trillion, four hundred thirty billion, one hundred thirty-two million, six hundred sixty-two thousand, five hundred thirty-three".