2566120128 has 112 divisors (see below), whose sum is σ = 7976591616. Its totient is φ = 717788160.

The previous prime is 2566120121. The next prime is 2566120169. The reversal of 2566120128 is 8210216652.

It is a super-2 number, since 2×2566120128² = 13169945022653472768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2566120121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19276 + ... + 74187.

It is an arithmetic number, because the mean of its divisors is an integer number (71219568).

Almost surely, 2^2566120128 is an apocalyptic number.

It is an amenable number.

2566120128 is an abundant number, since it is smaller than the sum of its proper divisors (5410471488).

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

2566120128 is a wasteful number, since it uses less digits than its factorization.

2566120128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93502 (or 93492 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2566120128 is about 50656.8862840976. The cubic root of 2566120128 is about 1369.0700222415.

The spelling of 2566120128 in words is "two billion, five hundred sixty-six million, one hundred twenty thousand, one hundred twenty-eight".