64896955163678 has 16 divisors (see below), whose sum is σ = 107388219988080. Its totient is φ = 29167170859200.

The previous prime is 64896955163629. The next prime is 64896955163723. The reversal of 64896955163678 is 87636155969846.

It is a super-2 number, since 2×64896955163678² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64896955163596 and 64896955163605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16572254213 + ... + 16572258128.

It is an arithmetic number, because the mean of its divisors is an integer number (6711763749255).

Almost surely, 2^{64896955163678} is an apocalyptic number.

64896955163678 is a deficient number, since it is larger than the sum of its proper divisors (42491264824402).

64896955163678 is a wasteful number, since it uses less digits than its factorization.

64896955163678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33144512443.

The product of its digits is 14108774400, while the sum is 83.

The spelling of 64896955163678 in words is "sixty-four trillion, eight hundred ninety-six billion, nine hundred fifty-five million, one hundred sixty-three thousand, six hundred seventy-eight".