643461014246 has 4 divisors (see below), whose sum is σ = 965191521372. Its totient is φ = 321730507122.

The previous prime is 643461014243. The next prime is 643461014263. The reversal of 643461014246 is 642410164346.

643461014246 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 642410164346 = 2 ⋅321205082173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643461014243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160865253560 + ... + 160865253563.

It is an arithmetic number, because the mean of its divisors is an integer number (241297880343).

Almost surely, 2^643461014246 is an apocalyptic number.

643461014246 is a deficient number, since it is larger than the sum of its proper divisors (321730507126).

643461014246 is a wasteful number, since it uses less digits than its factorization.

643461014246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321730507125.

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 643461014246 in words is "six hundred forty-three billion, four hundred sixty-one million, fourteen thousand, two hundred forty-six".