2557161408 has 28 divisors (see below), whose sum is σ = 6765823400. Its totient is φ = 852387072.

The previous prime is 2557161401. The next prime is 2557161443. The reversal of 2557161408 is 8041617552.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557161401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6659083 + ... + 6659466.

It is an arithmetic number, because the mean of its divisors is an integer number (241636550).

Almost surely, 2^2557161408 is an apocalyptic number.

It is an amenable number.

2557161408 is an abundant number, since it is smaller than the sum of its proper divisors (4208661992).

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

2557161408 is a wasteful number, since it uses less digits than its factorization.

2557161408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318564 (or 13318554 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The square root of 2557161408 is about 50568.3834821719. The cubic root of 2557161408 is about 1367.4749532581.

The spelling of 2557161408 in words is "two billion, five hundred fifty-seven million, one hundred sixty-one thousand, four hundred eight".