85168630737 has 40 divisors (see below), whose sum is σ = 129006170216. Its totient is φ = 55989439488.

The previous prime is 85168630711. The next prime is 85168630759. The reversal of 85168630737 is 73703686158.

It can be written as a sum of positive squares in 4 ways, for example, as 18872165376 + 66296465361 = 137376^2 + 257481^2 .

It is not a de Polignac number, because 85168630737 - 2¹⁰ = 85168629713 is a prime.

It is a super-2 number, since 2×85168630737² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85168630777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2156823 + ... + 2195955.

Almost surely, 2^85168630737 is an apocalyptic number.

It is an amenable number.

85168630737 is a deficient number, since it is larger than the sum of its proper divisors (43837539479).

85168630737 is a wasteful number, since it uses less digits than its factorization.

85168630737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39519 (or 39510 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 85168630737 in words is "eighty-five billion, one hundred sixty-eight million, six hundred thirty thousand, seven hundred thirty-seven".