1215514304144 has 40 divisors (see below), whose sum is σ = 2691989273088. Its totient is φ = 520839221760.

The previous prime is 1215514304047. The next prime is 1215514304153. The reversal of 1215514304144 is 4414034155121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379097 + ... + 1604600.

Almost surely, 2^{1215514304144} is an apocalyptic number.

1215514304144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1215514304144 is an abundant number, since it is smaller than the sum of its proper divisors (1476474968944).

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

1215514304144 is a wasteful number, since it uses less digits than its factorization.

1215514304144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989183 (or 1989177 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

Adding to 1215514304144 its reverse (4414034155121), we get a palindrome (5629548459265).

The spelling of 1215514304144 in words is "one trillion, two hundred fifteen billion, five hundred fourteen million, three hundred four thousand, one hundred forty-four".