646031441601 has 48 divisors (see below), whose sum is σ = 1150600773504. Its totient is φ = 340140632832.

The previous prime is 646031441597. The next prime is 646031441611. The reversal of 646031441601 is 106144130646.

646031441601 is a `hidden beast` number, since 6 + 4 + 6 + 0 + 3 + 1 + 4 + 41 + 601 = 666.

It is not a de Polignac number, because 646031441601 - 2² = 646031441597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (646031441611) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 273036 + ... + 1169021.

It is an arithmetic number, because the mean of its divisors is an integer number (23970849448).

Almost surely, 2^646031441601 is an apocalyptic number.

It is an amenable number.

646031441601 is a deficient number, since it is larger than the sum of its proper divisors (504569331903).

646031441601 is a wasteful number, since it uses less digits than its factorization.

646031441601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442630 (or 1442627 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 646031441601 in words is "six hundred forty-six billion, thirty-one million, four hundred forty-one thousand, six hundred one".