29159660644 has 9 divisors (see below), whose sum is σ = 51030003801. Its totient is φ = 14579659560.

The previous prime is 29159660627. The next prime is 29159660653. The reversal of 29159660644 is 44606695192.

The square root of 29159660644 is 170762.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2329220644 + 26830440000 = 48262^2 + 163800^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29159660591 and 29159660600.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 298834 + ... + 384214.

Almost surely, 2^29159660644 is an apocalyptic number.

29159660644 is the 170762-nd square number.

It is an amenable number.

29159660644 is a deficient number, since it is larger than the sum of its proper divisors (21870343157).

29159660644 is an frugal number, since it uses more digits than its factorization.

29159660644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170766 (or 85383 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The spelling of 29159660644 in words is "twenty-nine billion, one hundred fifty-nine million, six hundred sixty thousand, six hundred forty-four".