63828320397 has 16 divisors (see below), whose sum is σ = 85774476480. Its totient is φ = 42217344000.

The previous prime is 63828320359. The next prime is 63828320399. The reversal of 63828320397 is 79302382836.

It is a happy number.

It is not a de Polignac number, because 63828320397 - 2⁸ = 63828320141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63828320399) 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, 1869879 + ... + 1903707.

It is an arithmetic number, because the mean of its divisors is an integer number (5360904780).

Almost surely, 2^63828320397 is an apocalyptic number.

It is an amenable number.

63828320397 is a deficient number, since it is larger than the sum of its proper divisors (21946156083).

63828320397 is a wasteful number, since it uses less digits than its factorization.

63828320397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38764.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 63828320397 in words is "sixty-three billion, eight hundred twenty-eight million, three hundred twenty thousand, three hundred ninety-seven".