72578080766426 has 8 divisors (see below), whose sum is σ = 108884464982580. Its totient is φ = 36283259105568.

The previous prime is 72578080766423. The next prime is 72578080766447. The reversal of 72578080766426 is 62466708087527.

It can be written as a sum of positive squares in 2 ways, for example, as 48874766120401 + 23703314646025 = 6991049^2 + 4868605^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72578080766423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2890623131 + ... + 2890648238.

Almost surely, 2^{72578080766426} is an apocalyptic number.

72578080766426 is a deficient number, since it is larger than the sum of its proper divisors (36306384216154).

72578080766426 is a wasteful number, since it uses less digits than its factorization.

72578080766426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781277648.

The product of its (nonzero) digits is 379330560, while the sum is 68.

The spelling of 72578080766426 in words is "seventy-two trillion, five hundred seventy-eight billion, eighty million, seven hundred sixty-six thousand, four hundred twenty-six".