2756241021381 has 32 divisors (see below), whose sum is σ = 3849146155008. Its totient is φ = 1751019589440.

The previous prime is 2756241021377. The next prime is 2756241021493. The reversal of 2756241021381 is 1831201426572.

It is not a de Polignac number, because 2756241021381 - 2² = 2756241021377 is a prime.

It is a super-2 number, since 2×2756241021381² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2756241021341) 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 31 ways as a sum of consecutive naturals, for example, 44686495 + ... + 44748131.

It is an arithmetic number, because the mean of its divisors is an integer number (120285817344).

Almost surely, 2^{2756241021381} is an apocalyptic number.

It is an amenable number.

2756241021381 is a deficient number, since it is larger than the sum of its proper divisors (1092905133627).

2756241021381 is a wasteful number, since it uses less digits than its factorization.

2756241021381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64081.

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 2756241021381 in words is "two trillion, seven hundred fifty-six billion, two hundred forty-one million, twenty-one thousand, three hundred eighty-one".