20006991346 has 8 divisors (see below), whose sum is σ = 30021224940. Its totient is φ = 9999916368.

The previous prime is 20006991313. The next prime is 20006991383. The reversal of 20006991346 is 64319960002.

It can be written as a sum of positive squares in 2 ways, for example, as 19982932321 + 24059025 = 141361^2 + 4905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20006991299 and 20006991308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782661 + ... + 1793848.

Almost surely, 2^20006991346 is an apocalyptic number.

20006991346 is a deficient number, since it is larger than the sum of its proper divisors (10014233594).

20006991346 is a wasteful number, since it uses less digits than its factorization.

20006991346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579308.

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 20006991346 in words is "twenty billion, six million, nine hundred ninety-one thousand, three hundred forty-six".