2561466460 has 24 divisors (see below), whose sum is σ = 6147519840. Its totient is φ = 878217024.

The previous prime is 2561466443. The next prime is 2561466463. The reversal of 2561466460 is 646641652.

It is a super-2 number, since 2×2561466460² = 13122220851409863200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561466463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9147955 + ... + 9148234.

It is an arithmetic number, because the mean of its divisors is an integer number (256146660).

Almost surely, 2^2561466460 is an apocalyptic number.

2561466460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2561466460 is an abundant number, since it is smaller than the sum of its proper divisors (3586053380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2561466460 is a wasteful number, since it uses less digits than its factorization.

2561466460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18296205 (or 18296203 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2561466460 is about 50610.9322182471. The cubic root of 2561466460 is about 1368.2419169937.

The spelling of 2561466460 in words is "two billion, five hundred sixty-one million, four hundred sixty-six thousand, four hundred sixty".