85461623057 has 2 divisors, whose sum is σ = 85461623058. Its totient is φ = 85461623056.

The previous prime is 85461623053. The next prime is 85461623077. The reversal of 85461623057 is 75032616458.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51608934976 + 33852688081 = 227176^2 + 183991^2 .

It is a cyclic number.

It is not a de Polignac number, because 85461623057 - 2² = 85461623053 is a prime.

It is not a weakly prime, because it can be changed into another prime (85461623053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42730811528 + 42730811529.

It is an arithmetic number, because the mean of its divisors is an integer number (42730811529).

Almost surely, 2^85461623057 is an apocalyptic number.

It is an amenable number.

85461623057 is a deficient number, since it is larger than the sum of its proper divisors (1).

85461623057 is an equidigital number, since it uses as much as digits as its factorization.

85461623057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 85461623057 in words is "eighty-five billion, four hundred sixty-one million, six hundred twenty-three thousand, fifty-seven".