6401246445 has 48 divisors (see below), whose sum is σ = 12124944000. Its totient is φ = 3098309760.

The previous prime is 6401246441. The next prime is 6401246459. The reversal of 6401246445 is 5446421046.

6401246445 is a `hidden beast` number, since 6 + 4 + 0 + 1 + 2 + 4 + 644 + 5 = 666.

It is not a de Polignac number, because 6401246445 - 2² = 6401246441 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401246441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285711 + ... + 307299.

It is an arithmetic number, because the mean of its divisors is an integer number (252603000).

Almost surely, 2^6401246445 is an apocalyptic number.

It is an amenable number.

6401246445 is a deficient number, since it is larger than the sum of its proper divisors (5723697555).

6401246445 is a wasteful number, since it uses less digits than its factorization.

6401246445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22210 (or 22207 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 6401246445 is about 80007.7899019839. The cubic root of 6401246445 is about 1856.7560565627.

The spelling of 6401246445 in words is "six billion, four hundred one million, two hundred forty-six thousand, four hundred forty-five".