215054828104 has 8 divisors (see below), whose sum is σ = 403227802710. Its totient is φ = 107527414048.

The previous prime is 215054827991. The next prime is 215054828117. The reversal of 215054828104 is 401828450512.

It can be written as a sum of positive squares in only one way, i.e., 212242647204 + 2812180900 = 460698^2 + 53030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13440926749 + ... + 13440926764.

Almost surely, 2^215054828104 is an apocalyptic number.

It is an amenable number.

215054828104 is a deficient number, since it is larger than the sum of its proper divisors (188172974606).

215054828104 is a wasteful number, since it uses less digits than its factorization.

215054828104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26881853519 (or 26881853515 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 40.

The spelling of 215054828104 in words is "two hundred fifteen billion, fifty-four million, eight hundred twenty-eight thousand, one hundred four".