64902104604823 has 2 divisors, whose sum is σ = 64902104604824. Its totient is φ = 64902104604822.

The previous prime is 64902104604761. The next prime is 64902104604829. The reversal of 64902104604823 is 32840640120946.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64902104604823 is a prime.

It is a super-2 number, since 2×64902104604823² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64902104604829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32451052302411 + 32451052302412.

It is an arithmetic number, because the mean of its divisors is an integer number (32451052302412).

Almost surely, 2^{64902104604823} is an apocalyptic number.

64902104604823 is a deficient number, since it is larger than the sum of its proper divisors (1).

64902104604823 is an equidigital number, since it uses as much as digits as its factorization.

64902104604823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 64902104604823 in words is "sixty-four trillion, nine hundred two billion, one hundred four million, six hundred four thousand, eight hundred twenty-three".