77253584189 has 2 divisors, whose sum is σ = 77253584190. Its totient is φ = 77253584188.

The previous prime is 77253584173. The next prime is 77253584231. The reversal of 77253584189 is 98148535277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51600756964 + 25652827225 = 227158^2 + 160165^2 .

It is a cyclic number.

It is not a de Polignac number, because 77253584189 - 2⁴ = 77253584173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77253584389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38626792094 + 38626792095.

It is an arithmetic number, because the mean of its divisors is an integer number (38626792095).

Almost surely, 2^77253584189 is an apocalyptic number.

It is an amenable number.

77253584189 is a deficient number, since it is larger than the sum of its proper divisors (1).

77253584189 is an equidigital number, since it uses as much as digits as its factorization.

77253584189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16934400, while the sum is 59.

The spelling of 77253584189 in words is "seventy-seven billion, two hundred fifty-three million, five hundred eighty-four thousand, one hundred eighty-nine".