72001660570 has 16 divisors (see below), whose sum is σ = 148117701888. Its totient is φ = 24686283600.

The previous prime is 72001660561. The next prime is 72001660573. The reversal of 72001660570 is 7506610027.

It is not an unprimeable number, because it can be changed into a prime (72001660573) 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, 514297506 + ... + 514297645.

It is an arithmetic number, because the mean of its divisors is an integer number (9257356368).

Almost surely, 2^72001660570 is an apocalyptic number.

72001660570 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72001660570 is an abundant number, since it is smaller than the sum of its proper divisors (76116041318).

72001660570 is a wasteful number, since it uses less digits than its factorization.

72001660570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028595165.

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 72001660570 in words is "seventy-two billion, one million, six hundred sixty thousand, five hundred seventy".