407242681646 has 8 divisors (see below), whose sum is σ = 622389758904. Its totient is φ = 199779428680.

The previous prime is 407242681597. The next prime is 407242681687. The reversal of 407242681646 is 646186242704.

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

It is a junction number, because it is equal to n+sod(n) for n = 407242681594 and 407242681603.

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, 1920955940 + ... + 1920956151.

It is an arithmetic number, because the mean of its divisors is an integer number (77798719863).

Almost surely, 2^407242681646 is an apocalyptic number.

407242681646 is a deficient number, since it is larger than the sum of its proper divisors (215147077258).

407242681646 is a wasteful number, since it uses less digits than its factorization.

407242681646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841912146.

The product of its (nonzero) digits is 3096576, while the sum is 50.

The spelling of 407242681646 in words is "four hundred seven billion, two hundred forty-two million, six hundred eighty-one thousand, six hundred forty-six".