72974259507 has 4 divisors (see below), whose sum is σ = 97299012680. Its totient is φ = 48649506336.

The previous prime is 72974259473. The next prime is 72974259509. The reversal of 72974259507 is 70595247927.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70595247927 = 3 ⋅23531749309.

It is not a de Polignac number, because 72974259507 - 2¹¹ = 72974257459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72974259509) 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, 12162376582 + ... + 12162376587.

It is an arithmetic number, because the mean of its divisors is an integer number (24324753170).

Almost surely, 2^72974259507 is an apocalyptic number.

72974259507 is a deficient number, since it is larger than the sum of its proper divisors (24324753173).

72974259507 is a wasteful number, since it uses less digits than its factorization.

72974259507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24324753172.

The product of its (nonzero) digits is 11113200, while the sum is 57.

The spelling of 72974259507 in words is "seventy-two billion, nine hundred seventy-four million, two hundred fifty-nine thousand, five hundred seven".