2749161876257 has 4 divisors (see below), whose sum is σ = 2751311339520. Its totient is φ = 2747012412996.

The previous prime is 2749161876199. The next prime is 2749161876277. The reversal of 2749161876257 is 7526781619472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2749161876257 - 2³⁰ = 2748088134433 is a prime.

It is a super-3 number, since 3×2749161876257³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2749161876193 and 2749161876202.

It is not an unprimeable number, because it can be changed into a prime (2749161876277) 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, 1074729713 + ... + 1074732270.

It is an arithmetic number, because the mean of its divisors is an integer number (687827834880).

Almost surely, 2^{2749161876257} is an apocalyptic number.

It is an amenable number.

2749161876257 is a deficient number, since it is larger than the sum of its proper divisors (2149463263).

2749161876257 is a wasteful number, since it uses less digits than its factorization.

2749161876257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149463262.

The product of its digits is 71124480, while the sum is 65.

The spelling of 2749161876257 in words is "two trillion, seven hundred forty-nine billion, one hundred sixty-one million, eight hundred seventy-six thousand, two hundred fifty-seven".