643450162662 has 64 divisors (see below), whose sum is σ = 1440382003200. Its totient is φ = 212912928000.

The previous prime is 643450162573. The next prime is 643450162709. The reversal of 643450162662 is 266261054346.

It is a happy number.

643450162662 is a `hidden beast` number, since 6 + 434 + 50 + 162 + 6 + 6 + 2 = 666.

It is a super-2 number, since 2×643450162662² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6725014 + ... + 6820022.

It is an arithmetic number, because the mean of its divisors is an integer number (22505968800).

Almost surely, 2^643450162662 is an apocalyptic number.

643450162662 is an abundant number, since it is smaller than the sum of its proper divisors (796931840538).

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

643450162662 is a wasteful number, since it uses less digits than its factorization.

643450162662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95938 (or 95932 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 45.

The spelling of 643450162662 in words is "six hundred forty-three billion, four hundred fifty million, one hundred sixty-two thousand, six hundred sixty-two".