2566421012 has 24 divisors (see below), whose sum is σ = 4525416000. Its totient is φ = 1273478976.

The previous prime is 2566421003. The next prime is 2566421017. The reversal of 2566421012 is 2101246652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566421017) 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, 321623 + ... + 329505.

It is an arithmetic number, because the mean of its divisors is an integer number (188559000).

Almost surely, 2^2566421012 is an apocalyptic number.

It is an amenable number.

2566421012 is a deficient number, since it is larger than the sum of its proper divisors (1958994988).

2566421012 is a wasteful number, since it uses less digits than its factorization.

2566421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8495 (or 8493 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2566421012 is about 50659.8560203244. The cubic root of 2566421012 is about 1369.1235291112.

Adding to 2566421012 its reverse (2101246652), we get a palindrome (4667667664).

The spelling of 2566421012 in words is "two billion, five hundred sixty-six million, four hundred twenty-one thousand, twelve".