646243330011015 has 64 divisors (see below), whose sum is σ = 1190060852428800. Its totient is φ = 296162869968000.

The previous prime is 646243330011007. The next prime is 646243330011023. The reversal of 646243330011015 is 510110033342646.

It is an interprime number because it is at equal distance from previous prime (646243330011007) and next prime (646243330011023).

It is not a de Polignac number, because 646243330011015 - 2³ = 646243330011007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233405311 + ... + 236157840.

It is an arithmetic number, because the mean of its divisors is an integer number (18594700819200).

Almost surely, 2^{646243330011015} is an apocalyptic number.

646243330011015 is a deficient number, since it is larger than the sum of its proper divisors (543817522417785).

646243330011015 is a wasteful number, since it uses less digits than its factorization.

646243330011015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469563628.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 646243330011015 in words is "six hundred forty-six trillion, two hundred forty-three billion, three hundred thirty million, eleven thousand, fifteen".