2556273716 has 6 divisors (see below), whose sum is σ = 4473479010. Its totient is φ = 1278136856.

The previous prime is 2556273691. The next prime is 2556273721. The reversal of 2556273716 is 6173726552.

It can be written as a sum of positive squares in only one way, i.e., 2079724816 + 476548900 = 45604^2 + 21830^2 .

It is a super-2 number, since 2×2556273716² = 13069070622224897312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 319534211 + ... + 319534218.

It is an arithmetic number, because the mean of its divisors is an integer number (745579835).

Almost surely, 2^2556273716 is an apocalyptic number.

It is an amenable number.

2556273716 is a deficient number, since it is larger than the sum of its proper divisors (1917205294).

2556273716 is a wasteful number, since it uses less digits than its factorization.

2556273716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639068433 (or 639068431 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 2556273716 is about 50559.6055759932. The cubic root of 2556273716 is about 1367.3167000399.

The spelling of 2556273716 in words is "two billion, five hundred fifty-six million, two hundred seventy-three thousand, seven hundred sixteen".