646370604121 has 8 divisors (see below), whose sum is σ = 705176496288. Its totient is φ = 587572200000.

The previous prime is 646370604107. The next prime is 646370604133. The reversal of 646370604121 is 121406073646.

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

It is a cyclic number.

It is not a de Polignac number, because 646370604121 - 2⁹ = 646370603609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646370604221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1690755 + ... + 2037496.

It is an arithmetic number, because the mean of its divisors is an integer number (88147062036).

Almost surely, 2^646370604121 is an apocalyptic number.

It is an amenable number.

646370604121 is a deficient number, since it is larger than the sum of its proper divisors (58805892167).

646370604121 is a wasteful number, since it uses less digits than its factorization.

646370604121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744023.

The product of its (nonzero) digits is 145152, while the sum is 40.

Adding to 646370604121 its reverse (121406073646), we get a palindrome (767776677767).

The spelling of 646370604121 in words is "six hundred forty-six billion, three hundred seventy million, six hundred four thousand, one hundred twenty-one".