72901685563 has 8 divisors (see below), whose sum is σ = 84320022528. Its totient is φ = 61734301224.

The previous prime is 72901685537. The next prime is 72901685621. The reversal of 72901685563 is 36558610927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72901685563 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72901685563.

It is not an unprimeable number, because it can be changed into a prime (72901685533) 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, 62737531 + ... + 62738692.

It is an arithmetic number, because the mean of its divisors is an integer number (10540002816).

Almost surely, 2^72901685563 is an apocalyptic number.

72901685563 is a deficient number, since it is larger than the sum of its proper divisors (11418336965).

72901685563 is a wasteful number, since it uses less digits than its factorization.

72901685563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125476313.

The product of its (nonzero) digits is 2721600, while the sum is 52.

The spelling of 72901685563 in words is "seventy-two billion, nine hundred one million, six hundred eighty-five thousand, five hundred sixty-three".