72720924253939 has 8 divisors (see below), whose sum is σ = 78316226024400. Its totient is φ = 67125820272096.

The previous prime is 72720924253927. The next prime is 72720924253961. The reversal of 72720924253939 is 93935242902727.

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 72720924253939 - 2³³ = 72712334319347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72720924257939) 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, 48683089 + ... + 50154610.

It is an arithmetic number, because the mean of its divisors is an integer number (9789528253050).

Almost surely, 2^{72720924253939} is an apocalyptic number.

72720924253939 is a deficient number, since it is larger than the sum of its proper divisors (5595301770461).

72720924253939 is a wasteful number, since it uses less digits than its factorization.

72720924253939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98894309.

The product of its (nonzero) digits is 102876480, while the sum is 64.

The spelling of 72720924253939 in words is "seventy-two trillion, seven hundred twenty billion, nine hundred twenty-four million, two hundred fifty-three thousand, nine hundred thirty-nine".