7721441023 has 4 divisors (see below), whose sum is σ = 7987697640. Its totient is φ = 7455184408.

The previous prime is 7721441017. The next prime is 7721441059. The reversal of 7721441023 is 3201441277.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7721441023 - 2²¹ = 7719343871 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 (7721441003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133128265 + ... + 133128322.

It is an arithmetic number, because the mean of its divisors is an integer number (1996924410).

Almost surely, 2^7721441023 is an apocalyptic number.

7721441023 is a deficient number, since it is larger than the sum of its proper divisors (266256617).

7721441023 is a wasteful number, since it uses less digits than its factorization.

7721441023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266256616.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 7721441023 is about 87871.7305110125. The cubic root of 7721441023 is about 1976.5119884077.

The spelling of 7721441023 in words is "seven billion, seven hundred twenty-one million, four hundred forty-one thousand, twenty-three".