2503661465 has 4 divisors (see below), whose sum is σ = 3004393764. Its totient is φ = 2002929168.

The previous prime is 2503661449. The next prime is 2503661507. The reversal of 2503661465 is 5641663052.

It is a happy number.

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 1602881296 + 900780169 = 40036^2 + 30013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2503661465 - 2⁴ = 2503661449 is a prime.

It is a Duffinian 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, 250366142 + ... + 250366151.

It is an arithmetic number, because the mean of its divisors is an integer number (751098441).

Almost surely, 2^2503661465 is an apocalyptic number.

It is an amenable number.

2503661465 is a deficient number, since it is larger than the sum of its proper divisors (500732299).

2503661465 is an equidigital number, since it uses as much as digits as its factorization.

2503661465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500732298.

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 2503661465 is about 50036.6012534824. The cubic root of 2503661465 is about 1357.8710680970.

The spelling of 2503661465 in words is "two billion, five hundred three million, six hundred sixty-one thousand, four hundred sixty-five".