2166461121513 has 48 divisors (see below), whose sum is σ = 3200982921216. Its totient is φ = 1302176191680.

The previous prime is 2166461121491. The next prime is 2166461121547. The reversal of 2166461121513 is 3151211646612.

It is not a de Polignac number, because 2166461121513 - 2⁵ = 2166461121481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2166461121113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11607456 + ... + 11792622.

It is an arithmetic number, because the mean of its divisors is an integer number (66687144192).

Almost surely, 2^{2166461121513} is an apocalyptic number.

It is an amenable number.

2166461121513 is a deficient number, since it is larger than the sum of its proper divisors (1034521799703).

2166461121513 is a wasteful number, since it uses less digits than its factorization.

2166461121513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185734 (or 185721 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The spelling of 2166461121513 in words is "two trillion, one hundred sixty-six billion, four hundred sixty-one million, one hundred twenty-one thousand, five hundred thirteen".