72545214021623 has 8 divisors (see below), whose sum is σ = 82993676642592. Its totient is φ = 62117966555136.

The previous prime is 72545214021593. The next prime is 72545214021667. The reversal of 72545214021623 is 32612041254527.

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

It is a cyclic number.

It is not a de Polignac number, because 72545214021623 - 2¹⁴ = 72545214005239 is a prime.

It is a super-2 number, since 2×72545214021623² (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 (72545214021023) 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, 5303781290 + ... + 5303794967.

It is an arithmetic number, because the mean of its divisors is an integer number (10374209580324).

Almost surely, 2^{72545214021623} is an apocalyptic number.

72545214021623 is a deficient number, since it is larger than the sum of its proper divisors (10448462620969).

72545214021623 is a wasteful number, since it uses less digits than its factorization.

72545214021623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10607577241.

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 72545214021623 in words is "seventy-two trillion, five hundred forty-five billion, two hundred fourteen million, twenty-one thousand, six hundred twenty-three".