643102641046 has 16 divisors (see below), whose sum is σ = 972804008880. Its totient is φ = 318838609440.

The previous prime is 643102641001. The next prime is 643102641047. The reversal of 643102641046 is 640146201346.

It is a junction number, because it is equal to n+sod(n) for n = 643102640996 and 643102641014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (643102641047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668061 + ... + 1316248.

It is an arithmetic number, because the mean of its divisors is an integer number (60800250555).

Almost surely, 2^643102641046 is an apocalyptic number.

643102641046 is a deficient number, since it is larger than the sum of its proper divisors (329701367834).

643102641046 is a wasteful number, since it uses less digits than its factorization.

643102641046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985679.

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 643102641046 in words is "six hundred forty-three billion, one hundred two million, six hundred forty-one thousand, forty-six".