2516561140263 has 4 divisors (see below), whose sum is σ = 3355414853688. Its totient is φ = 1677707426840.

The previous prime is 2516561140241. The next prime is 2516561140277. The reversal of 2516561140263 is 3620411656152.

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 2516561140263 - 2²⁶ = 2516494031399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2516561147263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419426856708 + ... + 419426856713.

It is an arithmetic number, because the mean of its divisors is an integer number (838853713422).

Almost surely, 2^{2516561140263} is an apocalyptic number.

2516561140263 is a deficient number, since it is larger than the sum of its proper divisors (838853713425).

2516561140263 is an equidigital number, since it uses as much as digits as its factorization.

2516561140263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838853713424.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 2516561140263 in words is "two trillion, five hundred sixteen billion, five hundred sixty-one million, one hundred forty thousand, two hundred sixty-three".