72345487599 has 48 divisors (see below), whose sum is σ = 132229144320. Its totient is φ = 37021121280.

The previous prime is 72345487549. The next prime is 72345487633. The reversal of 72345487599 is 99578454327.

72345487599 is a `hidden beast` number, since 7 + 2 + 34 + 5 + 4 + 8 + 7 + 599 = 666.

It is not a de Polignac number, because 72345487599 - 2¹² = 72345483503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72345487549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 732634 + ... + 825495.

It is an arithmetic number, because the mean of its divisors is an integer number (2754773840).

Almost surely, 2^72345487599 is an apocalyptic number.

72345487599 is a deficient number, since it is larger than the sum of its proper divisors (59883656721).

72345487599 is a wasteful number, since it uses less digits than its factorization.

72345487599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558220 (or 1558217 counting only the distinct ones).

The product of its digits is 76204800, while the sum is 63.

The spelling of 72345487599 in words is "seventy-two billion, three hundred forty-five million, four hundred eighty-seven thousand, five hundred ninety-nine".