1215647374096 has 15 divisors (see below), whose sum is σ = 2355325332213. Its totient is φ = 607821481920.

The previous prime is 1215647374069. The next prime is 1215647374099. The reversal of 1215647374096 is 6904737465121.

The square root of 1215647374096 is 1102564.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1215365134096 + 282240000 = 1102436^2 + 16800^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215647374099) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 4272436 + ... + 4548076.

Almost surely, 2^{1215647374096} is an apocalyptic number.

1215647374096 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1215647374096 is the 1102564-th square number.

It is an amenable number.

1215647374096 is a deficient number, since it is larger than the sum of its proper divisors (1139677958117).

1215647374096 is an frugal number, since it uses more digits than its factorization.

1215647374096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551290 (or 275643 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 55.

The spelling of 1215647374096 in words is "one trillion, two hundred fifteen billion, six hundred forty-seven million, three hundred seventy-four thousand, ninety-six".