20662766201 has 16 divisors (see below), whose sum is σ = 25764697728. Its totient is φ = 16098777600.

The previous prime is 20662766183. The next prime is 20662766219. The reversal of 20662766201 is 10266726602.

It is an interprime number because it is at equal distance from previous prime (20662766183) and next prime (20662766219).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20662766201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20662766251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887951 + ... + 910923.

It is an arithmetic number, because the mean of its divisors is an integer number (1610293608).

Almost surely, 2^20662766201 is an apocalyptic number.

It is an amenable number.

20662766201 is a deficient number, since it is larger than the sum of its proper divisors (5101931527).

20662766201 is a wasteful number, since it uses less digits than its factorization.

20662766201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34672.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 20662766201 in words is "twenty billion, six hundred sixty-two million, seven hundred sixty-six thousand, two hundred one".