2566121430 has 16 divisors (see below), whose sum is σ = 6158691504. Its totient is φ = 684299040.

The previous prime is 2566121429. The next prime is 2566121473. The reversal of 2566121430 is 341216652.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 85537381 = 2566121430 / (2 + 5 + 6 + 6 + 1 + 2 + 1 + 4 + 3 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42768661 + ... + 42768720.

It is an arithmetic number, because the mean of its divisors is an integer number (384918219).

Almost surely, 2^2566121430 is an apocalyptic number.

2566121430 is an abundant number, since it is smaller than the sum of its proper divisors (3592570074).

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

2566121430 is a wasteful number, since it uses less digits than its factorization.

2566121430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85537391.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2566121430 is about 50656.8991352609. The cubic root of 2566121430 is about 1369.0702537881.

The spelling of 2566121430 in words is "two billion, five hundred sixty-six million, one hundred twenty-one thousand, four hundred thirty".