20606660626042 has 4 divisors (see below), whose sum is σ = 30909990939066. Its totient is φ = 10303330313020.

The previous prime is 20606660626007. The next prime is 20606660626061. The reversal of 20606660626042 is 24062606660602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18694909185121 + 1911751440921 = 4323761^2 + 1382661^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20606660625983 and 20606660626001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151665156509 + ... + 5151665156512.

Almost surely, 2^{20606660626042} is an apocalyptic number.

20606660626042 is a deficient number, since it is larger than the sum of its proper divisors (10303330313024).

20606660626042 is a wasteful number, since it uses less digits than its factorization.

20606660626042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10303330313023.

The product of its (nonzero) digits is 1492992, while the sum is 46.

The spelling of 20606660626042 in words is "twenty trillion, six hundred six billion, six hundred sixty million, six hundred twenty-six thousand, forty-two".