20064723749 has 8 divisors (see below), whose sum is σ = 23031250560. Its totient is φ = 17123231376.

The previous prime is 20064723727. The next prime is 20064723779. The reversal of 20064723749 is 94732746002.

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 20064723749 - 2²⁴ = 20047946533 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 (20064723779) 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 7 ways as a sum of consecutive naturals, for example, 6256889 + ... + 6260094.

It is an arithmetic number, because the mean of its divisors is an integer number (2878906320).

Almost surely, 2^20064723749 is an apocalyptic number.

It is an amenable number.

20064723749 is a deficient number, since it is larger than the sum of its proper divisors (2966526811).

20064723749 is a wasteful number, since it uses less digits than its factorization.

20064723749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12517219.

The product of its (nonzero) digits is 508032, while the sum is 44.

The spelling of 20064723749 in words is "twenty billion, sixty-four million, seven hundred twenty-three thousand, seven hundred forty-nine".