2645478597643 has 8 divisors (see below), whose sum is σ = 3024467589888. Its totient is φ = 2266755474984.

The previous prime is 2645478597637. The next prime is 2645478597647. The reversal of 2645478597643 is 3467958745462.

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

It is not a de Polignac number, because 2645478597643 - 2³⁷ = 2508039644171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645478597647) 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, 66446071 + ... + 66485872.

It is an arithmetic number, because the mean of its divisors is an integer number (378058448736).

Almost surely, 2^{2645478597643} is an apocalyptic number.

2645478597643 is a deficient number, since it is larger than the sum of its proper divisors (378988992245).

2645478597643 is a wasteful number, since it uses less digits than its factorization.

2645478597643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132934793.

The product of its digits is 1219276800, while the sum is 70.

The spelling of 2645478597643 in words is "two trillion, six hundred forty-five billion, four hundred seventy-eight million, five hundred ninety-seven thousand, six hundred forty-three".