1215993682215 has 256 divisors, whose sum is σ = 2482869043200. Its totient is φ = 559705158144.

The previous prime is 1215993682207. The next prime is 1215993682231. The reversal of 1215993682215 is 5122863995121.

1215993682215 is a `hidden beast` number, since 1 + 2 + 1 + 59 + 9 + 368 + 221 + 5 = 666.

It is not a de Polignac number, because 1215993682215 - 2³ = 1215993682207 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1672618182 + ... + 1672618908.

It is an arithmetic number, because the mean of its divisors is an integer number (9698707200).

Almost surely, 2^{1215993682215} is an apocalyptic number.

1215993682215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1215993682215 is an abundant number, since it is smaller than the sum of its proper divisors (1266875360985).

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

1215993682215 is a wasteful number, since it uses less digits than its factorization.

1215993682215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363 (or 1357 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The spelling of 1215993682215 in words is "one trillion, two hundred fifteen billion, nine hundred ninety-three million, six hundred eighty-two thousand, two hundred fifteen".