7944921342859 has 8 divisors (see below), whose sum is σ = 8290391069952. Its totient is φ = 7599454812840.

The previous prime is 7944921342833. The next prime is 7944921342881. The reversal of 7944921342859 is 9582431294497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7944921342859 - 2⁷ = 7944921342731 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7944921342794 and 7944921342803.

It is not an unprimeable number, because it can be changed into a prime (7944921342889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5254602 + ... + 6595504.

It is an arithmetic number, because the mean of its divisors is an integer number (1036298883744).

Almost surely, 2^{7944921342859} is an apocalyptic number.

7944921342859 is a deficient number, since it is larger than the sum of its proper divisors (345469727093).

7944921342859 is a wasteful number, since it uses less digits than its factorization.

7944921342859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598537.

The product of its digits is 156764160, while the sum is 67.

The spelling of 7944921342859 in words is "seven trillion, nine hundred forty-four billion, nine hundred twenty-one million, three hundred forty-two thousand, eight hundred fifty-nine".