645641232414 has 32 divisors (see below), whose sum is σ = 1298202111360. Its totient is φ = 214061084832.

The previous prime is 645641232389. The next prime is 645641232419. The reversal of 645641232414 is 414232146546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (645641232419) 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 15 ways as a sum of consecutive naturals, for example, 4231057 + ... + 4380995.

It is an arithmetic number, because the mean of its divisors is an integer number (40568815980).

Almost surely, 2^645641232414 is an apocalyptic number.

645641232414 is an abundant number, since it is smaller than the sum of its proper divisors (652560878946).

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

645641232414 is a wasteful number, since it uses less digits than its factorization.

645641232414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153784.

The product of its digits is 552960, while the sum is 42.

The spelling of 645641232414 in words is "six hundred forty-five billion, six hundred forty-one million, two hundred thirty-two thousand, four hundred fourteen".