2479460021645 has 4 divisors (see below), whose sum is σ = 2975352025980. Its totient is φ = 1983568017312.

The previous prime is 2479460021567. The next prime is 2479460021707. The reversal of 2479460021645 is 5461200649742.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 608654306569 + 1870805715076 = 780163^2 + 1367774^2 .

It is a cyclic number.

It is not a de Polignac number, because 2479460021645 - 2¹² = 2479460017549 is a prime.

It is a super-3 number, since 3×2479460021645³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2479460021593 and 2479460021602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247946002160 + ... + 247946002169.

It is an arithmetic number, because the mean of its divisors is an integer number (743838006495).

Almost surely, 2^{2479460021645} is an apocalyptic number.

It is an amenable number.

2479460021645 is a deficient number, since it is larger than the sum of its proper divisors (495892004335).

2479460021645 is an equidigital number, since it uses as much as digits as its factorization.

2479460021645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495892004334.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 2479460021645 in words is "two trillion, four hundred seventy-nine billion, four hundred sixty million, twenty-one thousand, six hundred forty-five".