72560924417 has 4 divisors (see below), whose sum is σ = 72688448580. Its totient is φ = 72433400256.

The previous prime is 72560924329. The next prime is 72560924431. The reversal of 72560924417 is 71442906527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7252055281 + 65308869136 = 85159^2 + 255556^2 .

It is a cyclic number.

It is not a de Polignac number, because 72560924417 - 2¹² = 72560920321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72560924717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63761228 + ... + 63762365.

It is an arithmetic number, because the mean of its divisors is an integer number (18172112145).

Almost surely, 2^72560924417 is an apocalyptic number.

It is an amenable number.

72560924417 is a deficient number, since it is larger than the sum of its proper divisors (127524163).

72560924417 is a wasteful number, since it uses less digits than its factorization.

72560924417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127524162.

The product of its (nonzero) digits is 846720, while the sum is 47.

The spelling of 72560924417 in words is "seventy-two billion, five hundred sixty million, nine hundred twenty-four thousand, four hundred seventeen".