72555627077 has 2 divisors, whose sum is σ = 72555627078. Its totient is φ = 72555627076.

The previous prime is 72555627073. The next prime is 72555627083. The reversal of 72555627077 is 77072655527.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45611717761 + 26943909316 = 213569^2 + 164146^2 .

It is a cyclic number.

It is not a de Polignac number, because 72555627077 - 2² = 72555627073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72555627073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36277813538 + 36277813539.

It is an arithmetic number, because the mean of its divisors is an integer number (36277813539).

Almost surely, 2^72555627077 is an apocalyptic number.

It is an amenable number.

72555627077 is a deficient number, since it is larger than the sum of its proper divisors (1).

72555627077 is an equidigital number, since it uses as much as digits as its factorization.

72555627077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7203000, while the sum is 53.

The spelling of 72555627077 in words is "seventy-two billion, five hundred fifty-five million, six hundred twenty-seven thousand, seventy-seven".