2661434661299 has 8 divisors (see below), whose sum is σ = 2670318024720. Its totient is φ = 2652562889856.

The previous prime is 2661434661289. The next prime is 2661434661359. The reversal of 2661434661299 is 9921664341662.

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 2661434661299 - 2⁸ = 2661434661043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661434661289) 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, 2437922 + ... + 3356535.

It is an arithmetic number, because the mean of its divisors is an integer number (333789753090).

Almost surely, 2^{2661434661299} is an apocalyptic number.

2661434661299 is a deficient number, since it is larger than the sum of its proper divisors (8883363421).

2661434661299 is a wasteful number, since it uses less digits than its factorization.

2661434661299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795989.

The product of its digits is 20155392, while the sum is 59.

The spelling of 2661434661299 in words is "two trillion, six hundred sixty-one billion, four hundred thirty-four million, six hundred sixty-one thousand, two hundred ninety-nine".