63935202497 has 4 divisors (see below), whose sum is σ = 65997628416. Its totient is φ = 61872776580.

The previous prime is 63935202493. The next prime is 63935202509. The reversal of 63935202497 is 79420253936.

63935202497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63935202497 - 2² = 63935202493 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63935202493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031212913 + ... + 1031212974.

It is an arithmetic number, because the mean of its divisors is an integer number (16499407104).

Almost surely, 2^63935202497 is an apocalyptic number.

It is an amenable number.

63935202497 is a deficient number, since it is larger than the sum of its proper divisors (2062425919).

63935202497 is a wasteful number, since it uses less digits than its factorization.

63935202497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062425918.

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 63935202497 in words is "sixty-three billion, nine hundred thirty-five million, two hundred two thousand, four hundred ninety-seven".