86815145142 has 64 divisors (see below), whose sum is σ = 214028179200. Its totient is φ = 25861717440.

The previous prime is 86815145129. The next prime is 86815145149. The reversal of 86815145142 is 24154151868.

86815145142 is a `hidden beast` number, since 8 + 6 + 8 + 151 + 451 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86815145149) 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, 1203543 + ... + 1273634.

It is an arithmetic number, because the mean of its divisors is an integer number (3344190300).

Almost surely, 2^86815145142 is an apocalyptic number.

86815145142 is an abundant number, since it is smaller than the sum of its proper divisors (127213034058).

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

86815145142 is a wasteful number, since it uses less digits than its factorization.

86815145142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2477258 (or 2477252 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The spelling of 86815145142 in words is "eighty-six billion, eight hundred fifteen million, one hundred forty-five thousand, one hundred forty-two".