1166215347515 has 32 divisors (see below), whose sum is σ = 1488056209920. Its totient is φ = 874379810304.

The previous prime is 1166215347449. The next prime is 1166215347601. The reversal of 1166215347515 is 5157435126611.

It is a cyclic number.

It is not a de Polignac number, because 1166215347515 - 2⁸ = 1166215347259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1166215347515.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19451474 + ... + 19511336.

It is an arithmetic number, because the mean of its divisors is an integer number (46501756560).

Almost surely, 2^{1166215347515} is an apocalyptic number.

1166215347515 is a deficient number, since it is larger than the sum of its proper divisors (321840862405).

1166215347515 is a wasteful number, since it uses less digits than its factorization.

1166215347515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60851.

The product of its digits is 756000, while the sum is 47.

The spelling of 1166215347515 in words is "one trillion, one hundred sixty-six billion, two hundred fifteen million, three hundred forty-seven thousand, five hundred fifteen".