964851904868543 has 4 divisors (see below), whose sum is σ = 964852204606008. Its totient is φ = 964851605131080.

The previous prime is 964851904868539. The next prime is 964851904868573. The reversal of 964851904868543 is 345868409158469.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 964851904868543 - 2² = 964851904868539 is a prime.

It is a super-2 number, since 2×964851904868543² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (964851904868573) 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, 144987248 + ... + 151495893.

It is an arithmetic number, because the mean of its divisors is an integer number (241213051151502).

Almost surely, 2^{964851904868543} is an apocalyptic number.

964851904868543 is a deficient number, since it is larger than the sum of its proper divisors (299737465).

964851904868543 is a wasteful number, since it uses less digits than its factorization.

964851904868543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299737464.

The product of its (nonzero) digits is 7166361600, while the sum is 80.

The spelling of 964851904868543 in words is "nine hundred sixty-four trillion, eight hundred fifty-one billion, nine hundred four million, eight hundred sixty-eight thousand, five hundred forty-three".