72072076427 has 4 divisors (see below), whose sum is σ = 77616082320. Its totient is φ = 66528070536.

The previous prime is 72072076423. The next prime is 72072076463. The reversal of 72072076427 is 72467027027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72467027027 = 1171 ⋅61884737.

It is a cyclic number.

It is not a de Polignac number, because 72072076427 - 2² = 72072076423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72072076423) 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, 2772002927 + ... + 2772002952.

It is an arithmetic number, because the mean of its divisors is an integer number (19404020580).

Almost surely, 2^72072076427 is an apocalyptic number.

72072076427 is a deficient number, since it is larger than the sum of its proper divisors (5544005893).

72072076427 is a wasteful number, since it uses less digits than its factorization.

72072076427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5544005892.

The product of its (nonzero) digits is 460992, while the sum is 44.

The spelling of 72072076427 in words is "seventy-two billion, seventy-two million, seventy-six thousand, four hundred twenty-seven".