72439370987 has 8 divisors (see below), whose sum is σ = 79567272960. Its totient is φ = 65642999400.

The previous prime is 72439370981. The next prime is 72439371119. The reversal of 72439370987 is 78907393427.

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 72439370987 - 2¹⁰ = 72439369963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72439370981) 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, 82882139 + ... + 82883012.

It is an arithmetic number, because the mean of its divisors is an integer number (9945909120).

Almost surely, 2^72439370987 is an apocalyptic number.

72439370987 is a deficient number, since it is larger than the sum of its proper divisors (7127901973).

72439370987 is a wasteful number, since it uses less digits than its factorization.

72439370987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165765193.

The product of its (nonzero) digits is 16003008, while the sum is 59.

The spelling of 72439370987 in words is "seventy-two billion, four hundred thirty-nine million, three hundred seventy thousand, nine hundred eighty-seven".