7959262721 has 8 divisors (see below), whose sum is σ = 7981142400. Its totient is φ = 7937400960.

The previous prime is 7959262693. The next prime is 7959262747. The reversal of 7959262721 is 1272629597.

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

It is a de Polignac number, because none of the positive numbers 2^k-7959262721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7959262721.

It is not an unprimeable number, because it can be changed into a prime (7959262771) 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, 1810436 + ... + 1814826.

It is an arithmetic number, because the mean of its divisors is an integer number (997642800).

Almost surely, 2^7959262721 is an apocalyptic number.

It is an amenable number.

7959262721 is a deficient number, since it is larger than the sum of its proper divisors (21879679).

7959262721 is a wasteful number, since it uses less digits than its factorization.

7959262721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8959.

The product of its digits is 952560, while the sum is 50.

The square root of 7959262721 is about 89214.7001396070. The cubic root of 7959262721 is about 1996.5994481505.

The spelling of 7959262721 in words is "seven billion, nine hundred fifty-nine million, two hundred sixty-two thousand, seven hundred twenty-one".