64200716497 has 4 divisors (see below), whose sum is σ = 64456496496. Its totient is φ = 63944936500.

The previous prime is 64200716467. The next prime is 64200716507. The reversal of 64200716497 is 79461700246.

64200716497 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 a de Polignac number, because none of the positive numbers 2^k-64200716497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64200716467) 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, 127889623 + ... + 127890124.

It is an arithmetic number, because the mean of its divisors is an integer number (16114124124).

Almost surely, 2^64200716497 is an apocalyptic number.

It is an amenable number.

64200716497 is a deficient number, since it is larger than the sum of its proper divisors (255779999).

64200716497 is a wasteful number, since it uses less digits than its factorization.

64200716497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255779998.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 64200716497 in words is "sixty-four billion, two hundred million, seven hundred sixteen thousand, four hundred ninety-seven".