86129990742 has 16 divisors (see below), whose sum is σ = 172265353920. Its totient is φ = 28709101512.

The previous prime is 86129990741. The next prime is 86129990747. The reversal of 86129990742 is 24709992168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86129990741) 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, 2109 + ... + 415047.

It is an arithmetic number, because the mean of its divisors is an integer number (10766584620).

Almost surely, 2^86129990742 is an apocalyptic number.

86129990742 is an abundant number, since it is smaller than the sum of its proper divisors (86135363178).

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

86129990742 is a wasteful number, since it uses less digits than its factorization.

86129990742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447707.

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 86129990742 in words is "eighty-six billion, one hundred twenty-nine million, nine hundred ninety thousand, seven hundred forty-two".