72577279141 has 2 divisors, whose sum is σ = 72577279142. Its totient is φ = 72577279140.

The previous prime is 72577279123. The next prime is 72577279169. The reversal of 72577279141 is 14197277527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72073456225 + 503822916 = 268465^2 + 22446^2 .

It is a cyclic number.

It is not a de Polignac number, because 72577279141 - 2⁷ = 72577279013 is a prime.

It is a super-2 number, since 2×72577279141² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72577279741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36288639570 + 36288639571.

It is an arithmetic number, because the mean of its divisors is an integer number (36288639571).

Almost surely, 2^72577279141 is an apocalyptic number.

It is an amenable number.

72577279141 is a deficient number, since it is larger than the sum of its proper divisors (1).

72577279141 is an equidigital number, since it uses as much as digits as its factorization.

72577279141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728720, while the sum is 52.

The spelling of 72577279141 in words is "seventy-two billion, five hundred seventy-seven million, two hundred seventy-nine thousand, one hundred forty-one".