2145465346661 has 16 divisors (see below), whose sum is σ = 2663940647424. Its totient is φ = 1682488813824.

The previous prime is 2145465346643. The next prime is 2145465346681. The reversal of 2145465346661 is 1666435645412.

It is a de Polignac number, because none of the positive numbers 2^k-2145465346661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145465346631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104310701 + ... + 104331266.

It is an arithmetic number, because the mean of its divisors is an integer number (166496290464).

Almost surely, 2^{2145465346661} is an apocalyptic number.

It is an amenable number.

2145465346661 is a deficient number, since it is larger than the sum of its proper divisors (518475300763).

2145465346661 is a wasteful number, since it uses less digits than its factorization.

2145465346661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208642100.

The product of its digits is 12441600, while the sum is 53.

The spelling of 2145465346661 in words is "two trillion, one hundred forty-five billion, four hundred sixty-five million, three hundred forty-six thousand, six hundred sixty-one".