72451053213 has 64 divisors (see below), whose sum is σ = 128514201600. Its totient is φ = 35167426560.

The previous prime is 72451053211. The next prime is 72451053221. The reversal of 72451053213 is 31235015427.

It is not a de Polignac number, because 72451053213 - 2¹ = 72451053211 is a prime.

It is a super-2 number, since 2×72451053213² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72451053211) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 207333 + ... + 433461.

It is an arithmetic number, because the mean of its divisors is an integer number (2008034400).

Almost surely, 2^72451053213 is an apocalyptic number.

72451053213 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

72451053213 is a deficient number, since it is larger than the sum of its proper divisors (56063148387).

72451053213 is a wasteful number, since it uses less digits than its factorization.

72451053213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226242.

The product of its (nonzero) digits is 25200, while the sum is 33.

The spelling of 72451053213 in words is "seventy-two billion, four hundred fifty-one million, fifty-three thousand, two hundred thirteen".