643226426346414 has 32 divisors (see below), whose sum is σ = 1294649956807200. Its totient is φ = 213042631381632.

The previous prime is 643226426346409. The next prime is 643226426346419. The reversal of 643226426346414 is 414643624622346.

It is an interprime number because it is at equal distance from previous prime (643226426346409) and next prime (643226426346419).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643226426346419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742380192 + ... + 743246124.

It is an arithmetic number, because the mean of its divisors is an integer number (40457811150225).

Almost surely, 2^{643226426346414} is an apocalyptic number.

643226426346414 is an abundant number, since it is smaller than the sum of its proper divisors (651423530460786).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

643226426346414 is a wasteful number, since it uses less digits than its factorization.

643226426346414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654644.

The product of its digits is 95551488, while the sum is 57.

The spelling of 643226426346414 in words is "six hundred forty-three trillion, two hundred twenty-six billion, four hundred twenty-six million, three hundred forty-six thousand, four hundred fourteen".