72759037969 has 4 divisors (see below), whose sum is σ = 76588461040. Its totient is φ = 68929614900.

The previous prime is 72759037951. The next prime is 72759037979. The reversal of 72759037969 is 96973095727.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72759037969 - 2¹⁵ = 72759005201 is a prime.

It is a super-2 number, since 2×72759037969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72759037969.

It is not an unprimeable number, because it can be changed into a prime (72759037979) 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, 1914711507 + ... + 1914711544.

It is an arithmetic number, because the mean of its divisors is an integer number (19147115260).

Almost surely, 2^72759037969 is an apocalyptic number.

It is an amenable number.

72759037969 is a deficient number, since it is larger than the sum of its proper divisors (3829423071).

72759037969 is a wasteful number, since it uses less digits than its factorization.

72759037969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3829423070.

The product of its (nonzero) digits is 45008460, while the sum is 64.

The spelling of 72759037969 in words is "seventy-two billion, seven hundred fifty-nine million, thirty-seven thousand, nine hundred sixty-nine".