85415157673 has 4 divisors (see below), whose sum is σ = 85416315588. Its totient is φ = 85413999760.

The previous prime is 85415157637. The next prime is 85415157691. The reversal of 85415157673 is 37675151458.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68750413209 + 16664744464 = 262203^2 + 129092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85415157673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85415157673.

It is not an unprimeable number, because it can be changed into a prime (85415157073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460186 + ... + 618547.

It is an arithmetic number, because the mean of its divisors is an integer number (21354078897).

Almost surely, 2^85415157673 is an apocalyptic number.

It is an amenable number.

85415157673 is a deficient number, since it is larger than the sum of its proper divisors (1157915).

85415157673 is a wasteful number, since it uses less digits than its factorization.

85415157673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157914.

The product of its digits is 3528000, while the sum is 52.

The spelling of 85415157673 in words is "eighty-five billion, four hundred fifteen million, one hundred fifty-seven thousand, six hundred seventy-three".