646432401514 has 16 divisors (see below), whose sum is σ = 1013425849800. Its totient is φ = 308853586944.

The previous prime is 646432401319. The next prime is 646432401551. The reversal of 646432401514 is 415104234646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 640552119025 + 5880282489 = 800345^2 + 76683^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 57444819 + ... + 57456070.

Almost surely, 2^646432401514 is an apocalyptic number.

646432401514 is a deficient number, since it is larger than the sum of its proper divisors (366993448286).

646432401514 is a wasteful number, since it uses less digits than its factorization.

646432401514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114901017.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 646432401514 in words is "six hundred forty-six billion, four hundred thirty-two million, four hundred one thousand, five hundred fourteen".