7721453752 has 16 divisors (see below), whose sum is σ = 14626982160. Its totient is φ = 3820925184.

The previous prime is 7721453639. The next prime is 7721453801. The reversal of 7721453752 is 2573541277.

It is a junction number, because it is equal to n+sod(n) for n = 7721453699 and 7721453708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4974388 + ... + 4975939.

It is an arithmetic number, because the mean of its divisors is an integer number (914186385).

Almost surely, 2^7721453752 is an apocalyptic number.

It is an amenable number.

7721453752 is a deficient number, since it is larger than the sum of its proper divisors (6905528408).

7721453752 is a wasteful number, since it uses less digits than its factorization.

7721453752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9950430 (or 9950426 counting only the distinct ones).

The product of its digits is 411600, while the sum is 43.

The square root of 7721453752 is about 87871.8029404200. The cubic root of 7721453752 is about 1976.5130745179.

The spelling of 7721453752 in words is "seven billion, seven hundred twenty-one million, four hundred fifty-three thousand, seven hundred fifty-two".