1215554231092 has 12 divisors (see below), whose sum is σ = 2143458225216. Its totient is φ = 603137595320.

The previous prime is 1215554231051. The next prime is 1215554231131. The reversal of 1215554231092 is 2901324555121.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1159879468 + ... + 1159880515.

It is an arithmetic number, because the mean of its divisors is an integer number (178621518768).

Almost surely, 2^{1215554231092} is an apocalyptic number.

It is an amenable number.

1215554231092 is a deficient number, since it is larger than the sum of its proper divisors (927903994124).

1215554231092 is a wasteful number, since it uses less digits than its factorization.

1215554231092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319760118 (or 2319760116 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 1215554231092 in words is "one trillion, two hundred fifteen billion, five hundred fifty-four million, two hundred thirty-one thousand, ninety-two".