72156676423 has 16 divisors (see below), whose sum is σ = 81106683840. Its totient is φ = 63693805824.

The previous prime is 72156676421. The next prime is 72156676463. The reversal of 72156676423 is 32467665127.

It is a cyclic number.

It is not a de Polignac number, because 72156676423 - 2¹ = 72156676421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156676421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1212693 + ... + 1270801.

It is an arithmetic number, because the mean of its divisors is an integer number (5069167740).

Almost surely, 2^72156676423 is an apocalyptic number.

72156676423 is a deficient number, since it is larger than the sum of its proper divisors (8950007417).

72156676423 is a wasteful number, since it uses less digits than its factorization.

72156676423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62298.

The product of its digits is 2540160, while the sum is 49.

The spelling of 72156676423 in words is "seventy-two billion, one hundred fifty-six million, six hundred seventy-six thousand, four hundred twenty-three".