845217378034 has 4 divisors (see below), whose sum is σ = 1267826067054. Its totient is φ = 422608689016.

The previous prime is 845217378017. The next prime is 845217378053. The reversal of 845217378034 is 430873712548.

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

It can be written as a sum of positive squares in only one way, i.e., 650160005625 + 195057372409 = 806325^2 + 441653^2 .

It is a super-2 number, since 2×845217378034² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211304344507 + ... + 211304344510.

Almost surely, 2^845217378034 is an apocalyptic number.

845217378034 is a deficient number, since it is larger than the sum of its proper divisors (422608689020).

845217378034 is a wasteful number, since it uses less digits than its factorization.

845217378034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422608689019.

The product of its (nonzero) digits is 4515840, while the sum is 52.

The spelling of 845217378034 in words is "eight hundred forty-five billion, two hundred seventeen million, three hundred seventy-eight thousand, thirty-four".