1215745754860 has 48 divisors (see below), whose sum is σ = 3142235186496. Its totient is φ = 384763491072.

The previous prime is 1215745754851. The next prime is 1215745754891. The reversal of 1215745754860 is 684575475121.

It is a super-2 number, since 2×1215745754860² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 333994267 + ... + 333997906.

It is an arithmetic number, because the mean of its divisors is an integer number (65463233052).

Almost surely, 2^{1215745754860} is an apocalyptic number.

1215745754860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1215745754860 is an abundant number, since it is smaller than the sum of its proper divisors (1926489431636).

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

1215745754860 is a wasteful number, since it uses less digits than its factorization.

1215745754860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667992202 (or 667992200 counting only the distinct ones).

The product of its (nonzero) digits is 9408000, while the sum is 55.

The spelling of 1215745754860 in words is "one trillion, two hundred fifteen billion, seven hundred forty-five million, seven hundred fifty-four thousand, eight hundred sixty".