215448039886 has 16 divisors (see below), whose sum is σ = 340207301664. Its totient is φ = 102128502784.

The previous prime is 215448039883. The next prime is 215448039907. The reversal of 215448039886 is 688930844512.

It is a self number, because there is not a number n which added to its sum of digits gives 215448039886.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215448039883) 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, 20718931 + ... + 20729326.

It is an arithmetic number, because the mean of its divisors is an integer number (21262956354).

Almost surely, 2^215448039886 is an apocalyptic number.

215448039886 is a deficient number, since it is larger than the sum of its proper divisors (124759261778).

215448039886 is a wasteful number, since it uses less digits than its factorization.

215448039886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41448395.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 215448039886 in words is "two hundred fifteen billion, four hundred forty-eight million, thirty-nine thousand, eight hundred eighty-six".