7721995004 has 6 divisors (see below), whose sum is σ = 13513491264. Its totient is φ = 3860997500.

The previous prime is 7721994977. The next prime is 7721995009. The reversal of 7721995004 is 4005991277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7721995009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965249372 + ... + 965249379.

It is an arithmetic number, because the mean of its divisors is an integer number (2252248544).

Almost surely, 2^7721995004 is an apocalyptic number.

It is an amenable number.

7721995004 is a deficient number, since it is larger than the sum of its proper divisors (5791496260).

7721995004 is a wasteful number, since it uses less digits than its factorization.

7721995004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930498755 (or 1930498753 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 7721995004 is about 87874.8826684850. The cubic root of 7721995004 is about 1976.5592560917.

The spelling of 7721995004 in words is "seven billion, seven hundred twenty-one million, nine hundred ninety-five thousand, four".