72074929247 has 4 divisors (see below), whose sum is σ = 72736167240. Its totient is φ = 71413691256.

The previous prime is 72074929243. The next prime is 72074929273. The reversal of 72074929247 is 74292947027.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74292947027 = 13 ⋅5714842079.

It is a cyclic number.

It is not a de Polignac number, because 72074929247 - 2² = 72074929243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72074929243) 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, 330618833 + ... + 330619050.

It is an arithmetic number, because the mean of its divisors is an integer number (18184041810).

Almost surely, 2^72074929247 is an apocalyptic number.

72074929247 is a deficient number, since it is larger than the sum of its proper divisors (661237993).

72074929247 is a wasteful number, since it uses less digits than its factorization.

72074929247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661237992.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 72074929247 in words is "seventy-two billion, seventy-four million, nine hundred twenty-nine thousand, two hundred forty-seven".