63897254399 has 8 divisors (see below), whose sum is σ = 69708127440. Its totient is φ = 58086720000.

The previous prime is 63897254329. The next prime is 63897254419. The reversal of 63897254399 is 99345279836.

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 63897254399 - 2¹² = 63897250303 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 (63897254329) 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, 465149 + ... + 586649.

It is an arithmetic number, because the mean of its divisors is an integer number (8713515930).

Almost surely, 2^63897254399 is an apocalyptic number.

63897254399 is a deficient number, since it is larger than the sum of its proper divisors (5810873041).

63897254399 is a wasteful number, since it uses less digits than its factorization.

63897254399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169321.

The product of its digits is 88179840, while the sum is 65.

The spelling of 63897254399 in words is "sixty-three billion, eight hundred ninety-seven million, two hundred fifty-four thousand, three hundred ninety-nine".