4000648710815 has 4 divisors (see below), whose sum is σ = 4800778452984. Its totient is φ = 3200518968648.

The previous prime is 4000648710761. The next prime is 4000648710823. The reversal of 4000648710815 is 5180178460004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000648710815 - 2³² = 3996353743519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400064871077 + ... + 400064871086.

It is an arithmetic number, because the mean of its divisors is an integer number (1200194613246).

Almost surely, 2^{4000648710815} is an apocalyptic number.

4000648710815 is a deficient number, since it is larger than the sum of its proper divisors (800129742169).

4000648710815 is an equidigital number, since it uses as much as digits as its factorization.

4000648710815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800129742168.

The product of its (nonzero) digits is 215040, while the sum is 44.

The spelling of 4000648710815 in words is "four trillion, six hundred forty-eight million, seven hundred ten thousand, eight hundred fifteen".