1215007971076 has 27 divisors (see below), whose sum is σ = 2133312543271. Its totient is φ = 605496744584.

The previous prime is 1215007971053. The next prime is 1215007971109. The reversal of 1215007971076 is 6701797005121.

The square root of 1215007971076 is 1102274.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 844341165 + ... + 844342603.

Almost surely, 2^{1215007971076} is an apocalyptic number.

1215007971076 is the 1102274-th square number.

It is an amenable number.

1215007971076 is a deficient number, since it is larger than the sum of its proper divisors (918304572195).

1215007971076 is an frugal number, since it uses more digits than its factorization.

1215007971076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 46.

The spelling of 1215007971076 in words is "one trillion, two hundred fifteen billion, seven million, nine hundred seventy-one thousand, seventy-six".