1215411312240 has 120 divisors (see below), whose sum is σ = 4082059997808. Its totient is φ = 324085570560.

The previous prime is 1215411312229. The next prime is 1215411312253. The reversal of 1215411312240 is 422131145121.

1215411312240 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 411 + 3 + 1 + 2 + 240 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10965900 + ... + 11076180.

Almost surely, 2^{1215411312240} is an apocalyptic number.

1215411312240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215411312240 is an abundant number, since it is smaller than the sum of its proper divisors (2866648685568).

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

1215411312240 is a wasteful number, since it uses less digits than its factorization.

1215411312240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125607 (or 125598 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1215411312240 its reverse (422131145121), we get a palindrome (1637542457361).

The spelling of 1215411312240 in words is "one trillion, two hundred fifteen billion, four hundred eleven million, three hundred twelve thousand, two hundred forty".