72144276723 has 20 divisors (see below), whose sum is σ = 111247570368. Its totient is φ = 46544693040.

The previous prime is 72144276707. The next prime is 72144276727. The reversal of 72144276723 is 32767244127.

72144276723 is a `hidden beast` number, since 7 + 214 + 427 + 6 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 72144276723 - 2⁴ = 72144276707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72144276727) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14363136 + ... + 14368157.

Almost surely, 2^72144276723 is an apocalyptic number.

72144276723 is a deficient number, since it is larger than the sum of its proper divisors (39103293645).

72144276723 is a wasteful number, since it uses less digits than its factorization.

72144276723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28731336 (or 28731327 counting only the distinct ones).

The product of its digits is 790272, while the sum is 45.

The spelling of 72144276723 in words is "seventy-two billion, one hundred forty-four million, two hundred seventy-six thousand, seven hundred twenty-three".