643105141662 has 32 divisors (see below), whose sum is σ = 1290295591200. Its totient is φ = 213688401920.

The previous prime is 643105141631. The next prime is 643105141667. The reversal of 643105141662 is 266141501346.

It is a self number, because there is not a number n which added to its sum of digits gives 643105141662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643105141667) 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, 2745838 + ... + 2970830.

It is an arithmetic number, because the mean of its divisors is an integer number (40321737225).

Almost surely, 2^643105141662 is an apocalyptic number.

643105141662 is an abundant number, since it is smaller than the sum of its proper divisors (647190449538).

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

643105141662 is a wasteful number, since it uses less digits than its factorization.

643105141662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226508.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 643105141662 in words is "six hundred forty-three billion, one hundred five million, one hundred forty-one thousand, six hundred sixty-two".