85115306990 has 32 divisors (see below), whose sum is σ = 175168350144. Its totient is φ = 29170056960.

The previous prime is 85115306963. The next prime is 85115307037. The reversal of 85115306990 is 9960351158.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89381 + ... + 422160.

It is an arithmetic number, because the mean of its divisors is an integer number (5474010942).

Almost surely, 2^85115306990 is an apocalyptic number.

85115306990 is an abundant number, since it is smaller than the sum of its proper divisors (90053043154).

85115306990 is a wasteful number, since it uses less digits than its factorization.

85115306990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513932.

The product of its (nonzero) digits is 291600, while the sum is 47.

The spelling of 85115306990 in words is "eighty-five billion, one hundred fifteen million, three hundred six thousand, nine hundred ninety".