2516454666403 has 4 divisors (see below), whose sum is σ = 2577831609528. Its totient is φ = 2455077723280.

The previous prime is 2516454666391. The next prime is 2516454666559. The reversal of 2516454666403 is 3046664546152.

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

It is a cyclic number.

It is not a de Polignac number, because 2516454666403 - 2⁹ = 2516454665891 is a prime.

It is a super-2 number, since 2×2516454666403² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2516454666703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30688471501 + ... + 30688471582.

It is an arithmetic number, because the mean of its divisors is an integer number (644457902382).

Almost surely, 2^{2516454666403} is an apocalyptic number.

2516454666403 is a deficient number, since it is larger than the sum of its proper divisors (61376943125).

2516454666403 is an equidigital number, since it uses as much as digits as its factorization.

2516454666403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61376943124.

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 2516454666403 in words is "two trillion, five hundred sixteen billion, four hundred fifty-four million, six hundred sixty-six thousand, four hundred three".