2645994995461 has 8 divisors (see below), whose sum is σ = 2662744175000. Its totient is φ = 2629269227520.

The previous prime is 2645994995453. The next prime is 2645994995551. The reversal of 2645994995461 is 1645994995462.

It can be written as a sum of positive squares in 4 ways, for example, as 106736810436 + 2539258185025 = 326706^2 + 1593505^2 .

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 2645994995461 - 2³ = 2645994995453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645994995411) 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, 5626116 + ... + 6078253.

It is an arithmetic number, because the mean of its divisors is an integer number (332843021875).

Almost surely, 2^{2645994995461} is an apocalyptic number.

It is an amenable number.

2645994995461 is a deficient number, since it is larger than the sum of its proper divisors (16749179539).

2645994995461 is a wasteful number, since it uses less digits than its factorization.

2645994995461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11705799.

The product of its digits is 755827200, while the sum is 73.

Subtracting from 2645994995461 its reverse (1645994995462), we obtain a palindrome (999999999999).

The spelling of 2645994995461 in words is "two trillion, six hundred forty-five billion, nine hundred ninety-four million, nine hundred ninety-five thousand, four hundred sixty-one".