90886778243495 has 16 divisors (see below), whose sum is σ = 122560364509632. Its totient is φ = 64198286169600.

The previous prime is 90886778243489. The next prime is 90886778243539. The reversal of 90886778243495 is 59434287768809.

It is not a de Polignac number, because 90886778243495 - 2¹⁶ = 90886778177959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30396914306 + ... + 30396917295.

It is an arithmetic number, because the mean of its divisors is an integer number (7660022781852).

Almost surely, 2^{90886778243495} is an apocalyptic number.

90886778243495 is a deficient number, since it is larger than the sum of its proper divisors (31673586266137).

90886778243495 is a wasteful number, since it uses less digits than its factorization.

90886778243495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60793831642.

The product of its (nonzero) digits is 5852528640, while the sum is 80.

The spelling of 90886778243495 in words is "ninety trillion, eight hundred eighty-six billion, seven hundred seventy-eight million, two hundred forty-three thousand, four hundred ninety-five".