20620642607 has 2 divisors, whose sum is σ = 20620642608. Its totient is φ = 20620642606.

The previous prime is 20620642577. The next prime is 20620642631. The reversal of 20620642607 is 70624602602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20620642607 - 2⁸ = 20620642351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20620642667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10310321303 + 10310321304.

It is an arithmetic number, because the mean of its divisors is an integer number (10310321304).

Almost surely, 2^20620642607 is an apocalyptic number.

20620642607 is a deficient number, since it is larger than the sum of its proper divisors (1).

20620642607 is an equidigital number, since it uses as much as digits as its factorization.

20620642607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 20620642607 in words is "twenty billion, six hundred twenty million, six hundred forty-two thousand, six hundred seven".