11666414461515 has 64 divisors (see below), whose sum is σ = 20664824716800. Its totient is φ = 5573237529600.

The previous prime is 11666414461463. The next prime is 11666414461531. The reversal of 11666414461515 is 51516441466611.

11666414461515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11666414461515 - 2²¹ = 11666412364363 is a prime.

It is a super-2 number, since 2×11666414461515² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1407375 + ... + 5031255.

It is an arithmetic number, because the mean of its divisors is an integer number (322887886200).

Almost surely, 2^{11666414461515} is an apocalyptic number.

11666414461515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11666414461515 is a deficient number, since it is larger than the sum of its proper divisors (8998410255285).

11666414461515 is a wasteful number, since it uses less digits than its factorization.

11666414461515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624188.

The product of its digits is 2073600, while the sum is 51.

The spelling of 11666414461515 in words is "eleven trillion, six hundred sixty-six billion, four hundred fourteen million, four hundred sixty-one thousand, five hundred fifteen".