2656400450 has 144 divisors (see below), whose sum is σ = 6030980064. Its totient is φ = 860198400.

The previous prime is 2656400429. The next prime is 2656400471. The reversal of 2656400450 is 540046562.

It is an interprime number because it is at equal distance from previous prime (2656400429) and next prime (2656400471).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3374957 + ... + 3375743.

It is an arithmetic number, because the mean of its divisors is an integer number (41881806).

Almost surely, 2^2656400450 is an apocalyptic number.

2656400450 is an abundant number, since it is smaller than the sum of its proper divisors (3374579614).

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

2656400450 is a wasteful number, since it uses less digits than its factorization.

2656400450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 2656400450 is about 51540.2798789452. The cubic root of 2656400450 is about 1384.9407108819.

The spelling of 2656400450 in words is "two billion, six hundred fifty-six million, four hundred thousand, four hundred fifty".