7756555000681 has 4 divisors (see below), whose sum is σ = 7756612156372. Its totient is φ = 7756497844992.

The previous prime is 7756555000651. The next prime is 7756555000721. The reversal of 7756555000681 is 1860005556577.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3043835026281 + 4712719974400 = 1744659^2 + 2170880^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7756555000681 is a prime.

It is a super-2 number, since 2×7756555000681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7756555000651) 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, 28373796 + ... + 28645861.

It is an arithmetic number, because the mean of its divisors is an integer number (1939153039093).

Almost surely, 2^{7756555000681} is an apocalyptic number.

It is an amenable number.

7756555000681 is a deficient number, since it is larger than the sum of its proper divisors (57155691).

7756555000681 is a wasteful number, since it uses less digits than its factorization.

7756555000681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57155690.

The product of its (nonzero) digits is 8820000, while the sum is 55.

The spelling of 7756555000681 in words is "seven trillion, seven hundred fifty-six billion, five hundred fifty-five million, six hundred eighty-one", and thus it is an aban number.