1215486356123 has 16 divisors (see below), whose sum is σ = 1418216649696. Its totient is φ = 1031430274560.

The previous prime is 1215486356113. The next prime is 1215486356159. The reversal of 1215486356123 is 3216536845121.

It is a cyclic number.

It is not a de Polignac number, because 1215486356123 - 2³⁶ = 1146766879387 is a prime.

It is a super-2 number, since 2×1215486356123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215486356113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63943268 + ... + 63962273.

It is an arithmetic number, because the mean of its divisors is an integer number (88638540606).

Almost surely, 2^{1215486356123} is an apocalyptic number.

1215486356123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1215486356123 is a deficient number, since it is larger than the sum of its proper divisors (202730293573).

1215486356123 is a wasteful number, since it uses less digits than its factorization.

1215486356123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127905614.

The product of its digits is 1036800, while the sum is 47.

The spelling of 1215486356123 in words is "one trillion, two hundred fifteen billion, four hundred eighty-six million, three hundred fifty-six thousand, one hundred twenty-three".