20664023701 has 8 divisors (see below), whose sum is σ = 20802337920. Its totient is φ = 20526134112.

The previous prime is 20664023693. The next prime is 20664023711. The reversal of 20664023701 is 10732046602.

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

It is a cyclic number.

It is not a de Polignac number, because 20664023701 - 2³ = 20664023693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20664023711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8205 + ... + 203458.

It is an arithmetic number, because the mean of its divisors is an integer number (2600292240).

Almost surely, 2^20664023701 is an apocalyptic number.

It is an amenable number.

20664023701 is a deficient number, since it is larger than the sum of its proper divisors (138314219).

20664023701 is a wasteful number, since it uses less digits than its factorization.

20664023701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212315.

The product of its (nonzero) digits is 12096, while the sum is 31.

The spelling of 20664023701 in words is "twenty billion, six hundred sixty-four million, twenty-three thousand, seven hundred one".