2756213789261 has 4 divisors (see below), whose sum is σ = 2756363382432. Its totient is φ = 2756064196092.

The previous prime is 2756213789239. The next prime is 2756213789309. The reversal of 2756213789261 is 1629873126572.

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 a de Polignac number, because none of the positive numbers 2^k-2756213789261 is a prime.

It is a super-2 number, since 2×2756213789261² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2756213789261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2756213789561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74768945 + ... + 74805798.

It is an arithmetic number, because the mean of its divisors is an integer number (689090845608).

Almost surely, 2^{2756213789261} is an apocalyptic number.

It is an amenable number.

2756213789261 is a deficient number, since it is larger than the sum of its proper divisors (149593171).

2756213789261 is a wasteful number, since it uses less digits than its factorization.

2756213789261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149593170.

The product of its digits is 15240960, while the sum is 59.

The spelling of 2756213789261 in words is "two trillion, seven hundred fifty-six billion, two hundred thirteen million, seven hundred eighty-nine thousand, two hundred sixty-one".