646015314374 has 4 divisors (see below), whose sum is σ = 969022971564. Its totient is φ = 323007657186.

The previous prime is 646015314341. The next prime is 646015314377. The reversal of 646015314374 is 473413510646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 473413510646 = 2 ⋅236706755323.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646015314377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161503828592 + ... + 161503828595.

It is an arithmetic number, because the mean of its divisors is an integer number (242255742891).

Almost surely, 2^646015314374 is an apocalyptic number.

646015314374 is a deficient number, since it is larger than the sum of its proper divisors (323007657190).

646015314374 is a wasteful number, since it uses less digits than its factorization.

646015314374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323007657189.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 646015314374 in words is "six hundred forty-six billion, fifteen million, three hundred fourteen thousand, three hundred seventy-four".