63210405397 has 8 divisors (see below), whose sum is σ = 66939874200. Its totient is φ = 59482182144.

The previous prime is 63210405389. The next prime is 63210405407. The reversal of 63210405397 is 79350401236.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19542362436 + 43668042961 = 139794^2 + 208969^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 63210405397 - 2³ = 63210405389 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 (63210405317) 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, 205872 + ... + 410857.

It is an arithmetic number, because the mean of its divisors is an integer number (8367484275).

Almost surely, 2^63210405397 is an apocalyptic number.

It is an amenable number.

63210405397 is a deficient number, since it is larger than the sum of its proper divisors (3729468803).

63210405397 is a wasteful number, since it uses less digits than its factorization.

63210405397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622775.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 63210405397 in words is "sixty-three billion, two hundred ten million, four hundred five thousand, three hundred ninety-seven".