1215345054165 has 64 divisors (see below), whose sum is σ = 2125916098560. Its totient is φ = 587985655040.

The previous prime is 1215345054139. The next prime is 1215345054191. The reversal of 1215345054165 is 5614505435121.

It is an interprime number because it is at equal distance from previous prime (1215345054139) and next prime (1215345054191).

It is a de Polignac number, because none of the positive numbers 2^k-1215345054165 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 167699572 + ... + 167706818.

It is an arithmetic number, because the mean of its divisors is an integer number (33217439040).

Almost surely, 2^{1215345054165} is an apocalyptic number.

1215345054165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1215345054165 is a deficient number, since it is larger than the sum of its proper divisors (910571044395).

1215345054165 is a wasteful number, since it uses less digits than its factorization.

1215345054165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322.

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 1215345054165 in words is "one trillion, two hundred fifteen billion, three hundred forty-five million, fifty-four thousand, one hundred sixty-five".