86149309278 has 32 divisors (see below), whose sum is σ = 173350712736. Its totient is φ = 28541195648.

The previous prime is 86149309271. The next prime is 86149309391. The reversal of 86149309278 is 87290394168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86149309271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3680500 + ... + 3703832.

It is an arithmetic number, because the mean of its divisors is an integer number (5417209773).

Almost surely, 2^86149309278 is an apocalyptic number.

86149309278 is an abundant number, since it is smaller than the sum of its proper divisors (87201403458).

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

86149309278 is a wasteful number, since it uses less digits than its factorization.

86149309278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27068.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 86149309278 in words is "eighty-six billion, one hundred forty-nine million, three hundred nine thousand, two hundred seventy-eight".