7721951980099 has 8 divisors (see below), whose sum is σ = 9208787454720. Its totient is φ = 6331041374856.

The previous prime is 7721951980097. The next prime is 7721951980133. The reversal of 7721951980099 is 9900891591277.

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

It is not a de Polignac number, because 7721951980099 - 2¹ = 7721951980097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7721951980097) 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 7 ways as a sum of consecutive naturals, for example, 23981217169 + ... + 23981217490.

It is an arithmetic number, because the mean of its divisors is an integer number (1151098431840).

Almost surely, 2^{7721951980099} is an apocalyptic number.

7721951980099 is a deficient number, since it is larger than the sum of its proper divisors (1486835474621).

7721951980099 is a wasteful number, since it uses less digits than its factorization.

7721951980099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47962434689.

The product of its (nonzero) digits is 25719120, while the sum is 67.

The spelling of 7721951980099 in words is "seven trillion, seven hundred twenty-one billion, nine hundred fifty-one million, nine hundred eighty thousand, ninety-nine".