6840289943951 has 32 divisors (see below), whose sum is σ = 7576293408768. Its totient is φ = 6147407185920.

The previous prime is 6840289943939. The next prime is 6840289943983. The reversal of 6840289943951 is 1593499820486.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6840289943951 - 2¹⁴ = 6840289927567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6840289942951) 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, 13022330 + ... + 13537416.

It is an arithmetic number, because the mean of its divisors is an integer number (236759169024).

Almost surely, 2^{6840289943951} is an apocalyptic number.

6840289943951 is a deficient number, since it is larger than the sum of its proper divisors (736003464817).

6840289943951 is a wasteful number, since it uses less digits than its factorization.

6840289943951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515471.

The product of its (nonzero) digits is 134369280, while the sum is 68.

The spelling of 6840289943951 in words is "six trillion, eight hundred forty billion, two hundred eighty-nine million, nine hundred forty-three thousand, nine hundred fifty-one".