85718437157 has 2 divisors, whose sum is σ = 85718437158. Its totient is φ = 85718437156.

The previous prime is 85718437127. The next prime is 85718437193. The reversal of 85718437157 is 75173481758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80911233601 + 4807203556 = 284449^2 + 69334^2 .

It is a cyclic number.

It is not a de Polignac number, because 85718437157 - 2⁶ = 85718437093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85718437117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42859218578 + 42859218579.

It is an arithmetic number, because the mean of its divisors is an integer number (42859218579).

Almost surely, 2^85718437157 is an apocalyptic number.

It is an amenable number.

85718437157 is a deficient number, since it is larger than the sum of its proper divisors (1).

85718437157 is an equidigital number, since it uses as much as digits as its factorization.

85718437157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6585600, while the sum is 56.

The spelling of 85718437157 in words is "eighty-five billion, seven hundred eighteen million, four hundred thirty-seven thousand, one hundred fifty-seven".