845687461834 has 4 divisors (see below), whose sum is σ = 1268531192754. Its totient is φ = 422843730916.

The previous prime is 845687461799. The next prime is 845687461849. The reversal of 845687461834 is 438164786548.

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., 793619067609 + 52068394225 = 890853^2 + 228185^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211421865457 + ... + 211421865460.

Almost surely, 2^845687461834 is an apocalyptic number.

845687461834 is a deficient number, since it is larger than the sum of its proper divisors (422843730920).

845687461834 is a wasteful number, since it uses less digits than its factorization.

845687461834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422843730919.

The product of its digits is 123863040, while the sum is 64.

The spelling of 845687461834 in words is "eight hundred forty-five billion, six hundred eighty-seven million, four hundred sixty-one thousand, eight hundred thirty-four".