2557420556286 has 32 divisors (see below), whose sum is σ = 5321800064160. Its totient is φ = 818320194944.

The previous prime is 2557420556281. The next prime is 2557420556293. The reversal of 2557420556286 is 6826550247552.

It is a happy number.

It is a super-2 number, since 2×2557420556286² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2557420556281) 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, 42449145 + ... + 42509348.

It is an arithmetic number, because the mean of its divisors is an integer number (166306252005).

Almost surely, 2^{2557420556286} is an apocalyptic number.

2557420556286 is an abundant number, since it is smaller than the sum of its proper divisors (2764379507874).

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

2557420556286 is a wasteful number, since it uses less digits than its factorization.

2557420556286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84958700.

The product of its (nonzero) digits is 40320000, while the sum is 57.

The spelling of 2557420556286 in words is "two trillion, five hundred fifty-seven billion, four hundred twenty million, five hundred fifty-six thousand, two hundred eighty-six".