10643640632 has 32 divisors (see below), whose sum is σ = 21165922080. Its totient is φ = 5006981760.

The previous prime is 10643640629. The next prime is 10643640641. The reversal of 10643640632 is 23604634601.

It is a super-2 number, since 2×10643640632² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10643640592 and 10643640601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462923 + ... + 485370.

It is an arithmetic number, because the mean of its divisors is an integer number (661435065).

Almost surely, 2^10643640632 is an apocalyptic number.

It is an amenable number.

10643640632 is a deficient number, since it is larger than the sum of its proper divisors (10522281448).

10643640632 is a wasteful number, since it uses less digits than its factorization.

10643640632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948383 (or 948379 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The spelling of 10643640632 in words is "ten billion, six hundred forty-three million, six hundred forty thousand, six hundred thirty-two".