2400644391806 has 8 divisors (see below), whose sum is σ = 3757530352464. Its totient is φ = 1148134274320.

The previous prime is 2400644391791. The next prime is 2400644391851. The reversal of 2400644391806 is 6081934460042.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 26093960735 + ... + 26093960826.

It is an arithmetic number, because the mean of its divisors is an integer number (469691294058).

Almost surely, 2^{2400644391806} is an apocalyptic number.

2400644391806 is a deficient number, since it is larger than the sum of its proper divisors (1356885960658).

2400644391806 is a wasteful number, since it uses less digits than its factorization.

2400644391806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52187921586.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 2400644391806 in words is "two trillion, four hundred billion, six hundred forty-four million, three hundred ninety-one thousand, eight hundred six".