77554480373 has 2 divisors, whose sum is σ = 77554480374. Its totient is φ = 77554480372.

The previous prime is 77554480349. The next prime is 77554480411. The reversal of 77554480373 is 37308445577.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000398289 + 13554082084 = 252983^2 + 116422^2 .

It is a cyclic number.

It is not a de Polignac number, because 77554480373 - 2²⁸ = 77286044917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77554440373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38777240186 + 38777240187.

It is an arithmetic number, because the mean of its divisors is an integer number (38777240187).

Almost surely, 2^77554480373 is an apocalyptic number.

It is an amenable number.

77554480373 is a deficient number, since it is larger than the sum of its proper divisors (1).

77554480373 is an equidigital number, since it uses as much as digits as its factorization.

77554480373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9878400, while the sum is 53.

The spelling of 77554480373 in words is "seventy-seven billion, five hundred fifty-four million, four hundred eighty thousand, three hundred seventy-three".