72050077615665 has 16 divisors (see below), whose sum is σ = 122061307961088. Its totient is φ = 36166313469696.

The previous prime is 72050077615651. The next prime is 72050077615669. The reversal of 72050077615665 is 56651677005027.

It is not a de Polignac number, because 72050077615665 - 2²¹ = 72050075518513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72050077615669) 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, 141274661737 + ... + 141274662246.

It is an arithmetic number, because the mean of its divisors is an integer number (7628831747568).

Almost surely, 2^{72050077615665} is an apocalyptic number.

It is an amenable number.

72050077615665 is a deficient number, since it is larger than the sum of its proper divisors (50011230345423).

72050077615665 is a wasteful number, since it uses less digits than its factorization.

72050077615665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282549324008.

The product of its (nonzero) digits is 18522000, while the sum is 57.

The spelling of 72050077615665 in words is "seventy-two trillion, fifty billion, seventy-seven million, six hundred fifteen thousand, six hundred sixty-five".