72473600387 has 4 divisors (see below), whose sum is σ = 74811458496. Its totient is φ = 70135742280.

The previous prime is 72473600363. The next prime is 72473600393. The reversal of 72473600387 is 78300637427.

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

It is a cyclic number.

It is not a de Polignac number, because 72473600387 - 2⁸ = 72473600131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72473600317) 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, 1168929008 + ... + 1168929069.

It is an arithmetic number, because the mean of its divisors is an integer number (18702864624).

Almost surely, 2^72473600387 is an apocalyptic number.

72473600387 is a deficient number, since it is larger than the sum of its proper divisors (2337858109).

72473600387 is a wasteful number, since it uses less digits than its factorization.

72473600387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337858108.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 72473600387 in words is "seventy-two billion, four hundred seventy-three million, six hundred thousand, three hundred eighty-seven".