86257123542 has 24 divisors (see below), whose sum is σ = 186921475416. Its totient is φ = 28747598976.

The previous prime is 86257123499. The next prime is 86257123553. The reversal of 86257123542 is 24532175268.

86257123542 is a `hidden beast` number, since 8 + 6 + 2 + 571 + 2 + 35 + 42 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285723 + ... + 504134.

It is an arithmetic number, because the mean of its divisors is an integer number (7788394809).

Almost surely, 2^86257123542 is an apocalyptic number.

86257123542 is an abundant number, since it is smaller than the sum of its proper divisors (100664351874).

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

86257123542 is a wasteful number, since it uses less digits than its factorization.

86257123542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795932 (or 795929 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The spelling of 86257123542 in words is "eighty-six billion, two hundred fifty-seven million, one hundred twenty-three thousand, five hundred forty-two".