72680470965 has 20 divisors (see below), whose sum is σ = 130286474604. Its totient is φ = 38762917632.

The previous prime is 72680470963. The next prime is 72680470969. The reversal of 72680470965 is 56907408627.

72680470965 is a `hidden beast` number, since 7 + 2 + 6 + 80 + 470 + 96 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38859054129 + 33821416836 = 197127^2 + 183906^2 .

It is not a de Polignac number, because 72680470965 - 2¹ = 72680470963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72680470963) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89728572 + ... + 89729381.

Almost surely, 2^72680470965 is an apocalyptic number.

It is an amenable number.

72680470965 is a deficient number, since it is larger than the sum of its proper divisors (57606003639).

72680470965 is a wasteful number, since it uses less digits than its factorization.

72680470965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179457970 (or 179457961 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 72680470965 in words is "seventy-two billion, six hundred eighty million, four hundred seventy thousand, nine hundred sixty-five".