2503490438261 has 4 divisors (see below), whose sum is σ = 2504371021632. Its totient is φ = 2502609854892.

The previous prime is 2503490438237. The next prime is 2503490438279. The reversal of 2503490438261 is 1628340943052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2503490438261 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 (2503490434261) 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, 440287421 + ... + 440293106.

It is an arithmetic number, because the mean of its divisors is an integer number (626092755408).

Almost surely, 2^{2503490438261} is an apocalyptic number.

It is an amenable number.

2503490438261 is a deficient number, since it is larger than the sum of its proper divisors (880583371).

2503490438261 is an equidigital number, since it uses as much as digits as its factorization.

2503490438261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880583370.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 2503490438261 in words is "two trillion, five hundred three billion, four hundred ninety million, four hundred thirty-eight thousand, two hundred sixty-one".