2756856145 has 8 divisors (see below), whose sum is σ = 3422304360. Its totient is φ = 2129433600.

The previous prime is 2756856139. The next prime is 2756856161. The reversal of 2756856145 is 5416586572.

It can be written as a sum of positive squares in 4 ways, for example, as 37859409 + 2718996736 = 6153^2 + 52144^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2756856145 - 2¹³ = 2756847953 is a prime.

It is a super-2 number, since 2×2756856145² = 15200511608448522050, which contains 22 as substring.

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, 9506256 + ... + 9506545.

It is an arithmetic number, because the mean of its divisors is an integer number (427788045).

Almost surely, 2^2756856145 is an apocalyptic number.

It is an amenable number.

2756856145 is a deficient number, since it is larger than the sum of its proper divisors (665448215).

2756856145 is a wasteful number, since it uses less digits than its factorization.

2756856145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19012835.

The product of its digits is 2016000, while the sum is 49.

The square root of 2756856145 is about 52505.7724921746. The cubic root of 2756856145 is about 1402.1830134857.

The spelling of 2756856145 in words is "two billion, seven hundred fifty-six million, eight hundred fifty-six thousand, one hundred forty-five".