7875795421 has 16 divisors (see below), whose sum is σ = 8560677888. Its totient is φ = 7202520000.

The previous prime is 7875795413. The next prime is 7875795439. The reversal of 7875795421 is 1245975787.

It is not a de Polignac number, because 7875795421 - 2³ = 7875795413 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 (7875795451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616915 + ... + 629551.

It is an arithmetic number, because the mean of its divisors is an integer number (535042368).

Almost surely, 2^7875795421 is an apocalyptic number.

It is an amenable number.

7875795421 is a deficient number, since it is larger than the sum of its proper divisors (684882467).

7875795421 is a wasteful number, since it uses less digits than its factorization.

7875795421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13092.

The product of its digits is 4939200, while the sum is 55.

The square root of 7875795421 is about 88745.6783229471. The cubic root of 7875795421 is about 1989.5955863632.

The spelling of 7875795421 in words is "seven billion, eight hundred seventy-five million, seven hundred ninety-five thousand, four hundred twenty-one".