20764722787201 has 4 divisors (see below), whose sum is σ = 20873438613504. Its totient is φ = 20656006960900.

The previous prime is 20764722787189. The next prime is 20764722787279. The reversal of 20764722787201 is 10278722746702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20764722787201 - 2⁵ = 20764722787169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20764722887201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54357912865 + ... + 54357913246.

It is an arithmetic number, because the mean of its divisors is an integer number (5218359653376).

Almost surely, 2^{20764722787201} is an apocalyptic number.

It is an amenable number.

20764722787201 is a deficient number, since it is larger than the sum of its proper divisors (108715826303).

20764722787201 is a wasteful number, since it uses less digits than its factorization.

20764722787201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108715826302.

The product of its (nonzero) digits is 7375872, while the sum is 55.

The spelling of 20764722787201 in words is "twenty trillion, seven hundred sixty-four billion, seven hundred twenty-two million, seven hundred eighty-seven thousand, two hundred one".