709953547221 has 8 divisors (see below), whose sum is σ = 1051783032960. Its totient is φ = 473302364796.

The previous prime is 709953547183. The next prime is 709953547223. The reversal of 709953547221 is 122745359907.

709953547221 is a `hidden beast` number, since 7 + 0 + 9 + 95 + 3 + 547 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 709953547221 - 2¹¹ = 709953545173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (709953547223) 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, 13147287885 + ... + 13147287938.

It is an arithmetic number, because the mean of its divisors is an integer number (131472879120).

Almost surely, 2^709953547221 is an apocalyptic number.

It is an amenable number.

709953547221 is a deficient number, since it is larger than the sum of its proper divisors (341829485739).

709953547221 is a wasteful number, since it uses less digits than its factorization.

709953547221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26294575832 (or 26294575826 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 709953547221 in words is "seven hundred nine billion, nine hundred fifty-three million, five hundred forty-seven thousand, two hundred twenty-one".