85766491140 has 96 divisors (see below), whose sum is σ = 264521327616. Its totient is φ = 20589997440.

The previous prime is 85766491067. The next prime is 85766491141. The reversal of 85766491140 is 4119466758.

It is not an unprimeable number, because it can be changed into a prime (85766491141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 562842 + ... + 698801.

It is an arithmetic number, because the mean of its divisors is an integer number (2755430496).

Almost surely, 2^85766491140 is an apocalyptic number.

It is an amenable number.

85766491140 is an abundant number, since it is smaller than the sum of its proper divisors (178754836476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85766491140 is a wasteful number, since it uses less digits than its factorization.

85766491140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261769 (or 1261767 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 85766491140 in words is "eighty-five billion, seven hundred sixty-six million, four hundred ninety-one thousand, one hundred forty".