20766146626 has 8 divisors (see below), whose sum is σ = 31575921804. Its totient is φ = 10240839360.

The previous prime is 20766146603. The next prime is 20766146647. The reversal of 20766146626 is 62664166702.

It can be written as a sum of positive squares in 2 ways, for example, as 18009371601 + 2756775025 = 134199^2 + 52505^2 .

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

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, 71116795 + ... + 71117086.

Almost surely, 2^20766146626 is an apocalyptic number.

20766146626 is a deficient number, since it is larger than the sum of its proper divisors (10809775178).

20766146626 is a wasteful number, since it uses less digits than its factorization.

20766146626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142233956.

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 20766146626 in words is "twenty billion, seven hundred sixty-six million, one hundred forty-six thousand, six hundred twenty-six".