979331434991 has 16 divisors (see below), whose sum is σ = 1205583220800. Its totient is φ = 774693497088.

The previous prime is 979331434981. The next prime is 979331434999. The reversal of 979331434991 is 199434133979.

It is a de Polignac number, because none of the positive numbers 2^k-979331434991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979331434999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 687806 + ... + 1559403.

It is an arithmetic number, because the mean of its divisors is an integer number (75348951300).

Almost surely, 2^979331434991 is an apocalyptic number.

979331434991 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

979331434991 is a deficient number, since it is larger than the sum of its proper divisors (226251785809).

979331434991 is a wasteful number, since it uses less digits than its factorization.

979331434991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252018.

The product of its digits is 19840464, while the sum is 62.

The spelling of 979331434991 in words is "nine hundred seventy-nine billion, three hundred thirty-one million, four hundred thirty-four thousand, nine hundred ninety-one".