64195697982897 has 32 divisors (see below), whose sum is σ = 102657023974400. Its totient is φ = 39413809149696.

The previous prime is 64195697982887. The next prime is 64195697982947. The reversal of 64195697982897 is 79828979659146.

64195697982897 is a `hidden beast` number, since 6 + 4 + 19 + 569 + 7 + 9 + 8 + 28 + 9 + 7 = 666.

It is not a de Polignac number, because 64195697982897 - 2⁸ = 64195697982641 is a prime.

It is a super-2 number, since 2×64195697982897² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64195697982877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211041697 + ... + 211345662.

It is an arithmetic number, because the mean of its divisors is an integer number (3208031999200).

Almost surely, 2^{64195697982897} is an apocalyptic number.

It is an amenable number.

64195697982897 is a deficient number, since it is larger than the sum of its proper divisors (38461325991503).

64195697982897 is a wasteful number, since it uses less digits than its factorization.

64195697982897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422387814 (or 422387808 counting only the distinct ones).

The product of its digits is 29628426240, while the sum is 90.

The spelling of 64195697982897 in words is "sixty-four trillion, one hundred ninety-five billion, six hundred ninety-seven million, nine hundred eighty-two thousand, eight hundred ninety-seven".