4991322231993 has 8 divisors (see below), whose sum is σ = 6662401577856. Its totient is φ = 3323895520400.

The previous prime is 4991322231991. The next prime is 4991322232007. The reversal of 4991322231993 is 3991322231994.

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 4991322231993 - 2¹ = 4991322231991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4991322231991) 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, 913155378 + ... + 913160843.

It is an arithmetic number, because the mean of its divisors is an integer number (832800197232).

Almost surely, 2^{4991322231993} is an apocalyptic number.

It is an amenable number.

4991322231993 is a deficient number, since it is larger than the sum of its proper divisors (1671079345863).

4991322231993 is a wasteful number, since it uses less digits than its factorization.

4991322231993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826317135.

The product of its digits is 5668704, while the sum is 57.

Subtracting from 4991322231993 its reverse (3991322231994), we obtain a palindrome (999999999999).

The spelling of 4991322231993 in words is "four trillion, nine hundred ninety-one billion, three hundred twenty-two million, two hundred thirty-one thousand, nine hundred ninety-three".