90856631770 has 16 divisors (see below), whose sum is σ = 165845346048. Its totient is φ = 35830784080.

The previous prime is 90856631713. The next prime is 90856631771. The reversal of 90856631770 is 7713665809.

It is not an unprimeable number, because it can be changed into a prime (90856631771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63982834 + ... + 63984253.

It is an arithmetic number, because the mean of its divisors is an integer number (10365334128).

Almost surely, 2^90856631770 is an apocalyptic number.

90856631770 is a deficient number, since it is larger than the sum of its proper divisors (74988714278).

90856631770 is a wasteful number, since it uses less digits than its factorization.

90856631770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127967165.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 90856631770 in words is "ninety billion, eight hundred fifty-six million, six hundred thirty-one thousand, seven hundred seventy".