63454516397 has 4 divisors (see below), whose sum is σ = 63688666176. Its totient is φ = 63220366620.

The previous prime is 63454516339. The next prime is 63454516399. The reversal of 63454516397 is 79361545436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 63454516397 - 2²² = 63450322093 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 (63454516399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117074483 + ... + 117075024.

It is an arithmetic number, because the mean of its divisors is an integer number (15922166544).

Almost surely, 2^63454516397 is an apocalyptic number.

It is an amenable number.

63454516397 is a deficient number, since it is larger than the sum of its proper divisors (234149779).

63454516397 is a wasteful number, since it uses less digits than its factorization.

63454516397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234149778.

The product of its digits is 8164800, while the sum is 53.

The spelling of 63454516397 in words is "sixty-three billion, four hundred fifty-four million, five hundred sixteen thousand, three hundred ninety-seven".