72072064871999 has 32 divisors (see below), whose sum is σ = 75976777768320. Its totient is φ = 68233370591232.

The previous prime is 72072064871987. The next prime is 72072064872023. The reversal of 72072064871999 is 99917846027027.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72072064871999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72072064871929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10958194199 + ... + 10958200775.

It is an arithmetic number, because the mean of its divisors is an integer number (2374274305260).

Almost surely, 2^{72072064871999} is an apocalyptic number.

72072064871999 is a deficient number, since it is larger than the sum of its proper divisors (3904712896321).

72072064871999 is a wasteful number, since it uses less digits than its factorization.

72072064871999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939.

The product of its (nonzero) digits is 192036096, while the sum is 71.

The spelling of 72072064871999 in words is "seventy-two trillion, seventy-two billion, sixty-four million, eight hundred seventy-one thousand, nine hundred ninety-nine".