7128713405 has 8 divisors (see below), whose sum is σ = 9332133984. Its totient is φ = 5184518800.

The previous prime is 7128713359. The next prime is 7128713443. The reversal of 7128713405 is 5043178217.

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

It is not a de Polignac number, because 7128713405 - 2⁸ = 7128713149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64806431 + ... + 64806540.

It is an arithmetic number, because the mean of its divisors is an integer number (1166516748).

Almost surely, 2^7128713405 is an apocalyptic number.

It is an amenable number.

7128713405 is a deficient number, since it is larger than the sum of its proper divisors (2203420579).

7128713405 is a wasteful number, since it uses less digits than its factorization.

7128713405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129612987.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 7128713405 is about 84431.7085282538. The cubic root of 7128713405 is about 1924.5848009911.

The spelling of 7128713405 in words is "seven billion, one hundred twenty-eight million, seven hundred thirteen thousand, four hundred five".