2166062521499 has 8 divisors (see below), whose sum is σ = 2175868902480. Its totient is φ = 2156276134656.

The previous prime is 2166062521451. The next prime is 2166062521517. The reversal of 2166062521499 is 9941252606612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2166062521499 - 2⁸ = 2166062521243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2166062521499.

It is not an unprimeable number, because it can be changed into a prime (2166062521999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4781354 + ... + 5214735.

It is an arithmetic number, because the mean of its divisors is an integer number (271983612810).

Almost surely, 2^{2166062521499} is an apocalyptic number.

2166062521499 is a deficient number, since it is larger than the sum of its proper divisors (9806380981).

2166062521499 is an equidigital number, since it uses as much as digits as its factorization.

2166062521499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9997069.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 2166062521499 in words is "two trillion, one hundred sixty-six billion, sixty-two million, five hundred twenty-one thousand, four hundred ninety-nine".