63399706407 has 24 divisors (see below), whose sum is σ = 96527849600. Its totient is φ = 39987656208.

The previous prime is 63399706399. The next prime is 63399706421. The reversal of 63399706407 is 70460799336.

It is not a de Polignac number, because 63399706407 - 2³ = 63399706399 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 (63399706457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124483 + ... + 377220.

Almost surely, 2^63399706407 is an apocalyptic number.

63399706407 is a deficient number, since it is larger than the sum of its proper divisors (33128143193).

63399706407 is a wasteful number, since it uses less digits than its factorization.

63399706407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502467 (or 502464 counting only the distinct ones).

The product of its (nonzero) digits is 5143824, while the sum is 54.

The spelling of 63399706407 in words is "sixty-three billion, three hundred ninety-nine million, seven hundred six thousand, four hundred seven".