1215573260775 has 12 divisors (see below), whose sum is σ = 2009747791272. Its totient is φ = 648305739040.

The previous prime is 1215573260753. The next prime is 1215573260791. The reversal of 1215573260775 is 5770623755121.

It is not a de Polignac number, because 1215573260775 - 2⁸ = 1215573260519 is a prime.

It is a super-2 number, since 2×1215573260775² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8103821664 + ... + 8103821813.

It is an arithmetic number, because the mean of its divisors is an integer number (167478982606).

Almost surely, 2^{1215573260775} is an apocalyptic number.

1215573260775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1215573260775 is a deficient number, since it is larger than the sum of its proper divisors (794174530497).

1215573260775 is a wasteful number, since it uses less digits than its factorization.

1215573260775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16207643490 (or 16207643485 counting only the distinct ones).

The product of its (nonzero) digits is 3087000, while the sum is 51.

The spelling of 1215573260775 in words is "one trillion, two hundred fifteen billion, five hundred seventy-three million, two hundred sixty thousand, seven hundred seventy-five".