1215134640006 has 32 divisors (see below), whose sum is σ = 2791992250368. Its totient is φ = 345363620160.

The previous prime is 1215134639977. The next prime is 1215134640023. The reversal of 1215134640006 is 6000464315121.

It is a super-2 number, since 2×1215134640006² (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, 75729615 + ... + 75745658.

It is an arithmetic number, because the mean of its divisors is an integer number (87249757824).

Almost surely, 2^{1215134640006} is an apocalyptic number.

1215134640006 is an abundant number, since it is smaller than the sum of its proper divisors (1576857610362).

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

1215134640006 is a wasteful number, since it uses less digits than its factorization.

1215134640006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151475476.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 1215134640006 its reverse (6000464315121), we get a palindrome (7215598955127).

The spelling of 1215134640006 in words is "one trillion, two hundred fifteen billion, one hundred thirty-four million, six hundred forty thousand, six".