63949401358 has 4 divisors (see below), whose sum is σ = 95924102040. Its totient is φ = 31974700678.

The previous prime is 63949401353. The next prime is 63949401403. The reversal of 63949401358 is 85310494936.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63949401353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15987350338 + ... + 15987350341.

It is an arithmetic number, because the mean of its divisors is an integer number (23981025510).

Almost surely, 2^63949401358 is an apocalyptic number.

63949401358 is a deficient number, since it is larger than the sum of its proper divisors (31974700682).

63949401358 is a wasteful number, since it uses less digits than its factorization.

63949401358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31974700681.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 63949401358 in words is "sixty-three billion, nine hundred forty-nine million, four hundred one thousand, three hundred fifty-eight".