72669617633 has 8 divisors (see below), whose sum is σ = 74044984896. Its totient is φ = 71294407600.

The previous prime is 72669617599. The next prime is 72669617641. The reversal of 72669617633 is 33671696627.

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 72669617633 - 2⁶ = 72669617569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72669617663) 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, 1360868 + ... + 1413258.

It is an arithmetic number, because the mean of its divisors is an integer number (9255623112).

Almost surely, 2^72669617633 is an apocalyptic number.

It is an amenable number.

72669617633 is a deficient number, since it is larger than the sum of its proper divisors (1375367263).

72669617633 is a wasteful number, since it uses less digits than its factorization.

72669617633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78615.

The product of its digits is 10287648, while the sum is 56.

The spelling of 72669617633 in words is "seventy-two billion, six hundred sixty-nine million, six hundred seventeen thousand, six hundred thirty-three".