86790142887 has 16 divisors (see below), whose sum is σ = 133464967680. Its totient is φ = 49139371872.

The previous prime is 86790142861. The next prime is 86790142913. The reversal of 86790142887 is 78824109768.

It is an interprime number because it is at equal distance from previous prime (86790142861) and next prime (86790142913).

It is not a de Polignac number, because 86790142887 - 2²⁶ = 86723034023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86790142887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86790142987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18955803 + ... + 18960380.

It is an arithmetic number, because the mean of its divisors is an integer number (8341560480).

Almost surely, 2^86790142887 is an apocalyptic number.

86790142887 is a deficient number, since it is larger than the sum of its proper divisors (46674824793).

86790142887 is a wasteful number, since it uses less digits than its factorization.

86790142887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37916302.

The product of its (nonzero) digits is 10838016, while the sum is 60.

The spelling of 86790142887 in words is "eighty-six billion, seven hundred ninety million, one hundred forty-two thousand, eight hundred eighty-seven".