1215155510104 has 64 divisors (see below), whose sum is σ = 2303642880000. Its totient is φ = 600896102400.

The previous prime is 1215155510057. The next prime is 1215155510123. The reversal of 1215155510104 is 4010155515121.

It is a super-2 number, since 2×1215155510104² (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 15 ways as a sum of consecutive naturals, for example, 273005079 + ... + 273009529.

It is an arithmetic number, because the mean of its divisors is an integer number (35994420000).

Almost surely, 2^{1215155510104} is an apocalyptic number.

It is an amenable number.

1215155510104 is a deficient number, since it is larger than the sum of its proper divisors (1088487369896).

1215155510104 is a wasteful number, since it uses less digits than its factorization.

1215155510104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5648 (or 5644 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 31.

The spelling of 1215155510104 in words is "one trillion, two hundred fifteen billion, one hundred fifty-five million, five hundred ten thousand, one hundred four".