72370951789 has 4 divisors (see below), whose sum is σ = 72551428380. Its totient is φ = 72190475200.

The previous prime is 72370951771. The next prime is 72370951801. The reversal of 72370951789 is 98715907327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39443946025 + 32927005764 = 198605^2 + 181458^2 .

It is a cyclic number.

It is not a de Polignac number, because 72370951789 - 2¹⁵ = 72370919021 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 (72370951739) 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, 90237694 + ... + 90238495.

It is an arithmetic number, because the mean of its divisors is an integer number (18137857095).

Almost surely, 2^72370951789 is an apocalyptic number.

It is an amenable number.

72370951789 is a deficient number, since it is larger than the sum of its proper divisors (180476591).

72370951789 is a wasteful number, since it uses less digits than its factorization.

72370951789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180476590.

The product of its (nonzero) digits is 6667920, while the sum is 58.

The spelling of 72370951789 in words is "seventy-two billion, three hundred seventy million, nine hundred fifty-one thousand, seven hundred eighty-nine".