20522020667 has 2 divisors, whose sum is σ = 20522020668. Its totient is φ = 20522020666.

The previous prime is 20522020637. The next prime is 20522020721. The reversal of 20522020667 is 76602022502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20522020667 - 2³² = 16227053371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20522020637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10261010333 + 10261010334.

It is an arithmetic number, because the mean of its divisors is an integer number (10261010334).

Almost surely, 2^20522020667 is an apocalyptic number.

20522020667 is a deficient number, since it is larger than the sum of its proper divisors (1).

20522020667 is an equidigital number, since it uses as much as digits as its factorization.

20522020667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20522020667 in words is "twenty billion, five hundred twenty-two million, twenty thousand, six hundred sixty-seven".