72942280705 has 16 divisors (see below), whose sum is σ = 100115280000. Its totient is φ = 49977487872.

The previous prime is 72942280703. The next prime is 72942280721. The reversal of 72942280705 is 50708224927.

It is a cyclic number.

It is not a de Polignac number, because 72942280705 - 2¹ = 72942280703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72942280703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 790579 + ... + 878008.

It is an arithmetic number, because the mean of its divisors is an integer number (6257205000).

Almost surely, 2^72942280705 is an apocalyptic number.

It is an amenable number.

72942280705 is a deficient number, since it is larger than the sum of its proper divisors (27172999295).

72942280705 is a wasteful number, since it uses less digits than its factorization.

72942280705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669848.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 72942280705 in words is "seventy-two billion, nine hundred forty-two million, two hundred eighty thousand, seven hundred five".