20001332079 has 16 divisors (see below), whose sum is σ = 30262064640. Its totient is φ = 13050513720.

The previous prime is 20001332077. The next prime is 20001332089. The reversal of 20001332079 is 97023310002.

It is not a de Polignac number, because 20001332079 - 2¹ = 20001332077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001332077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7879477 + ... + 7882014.

It is an arithmetic number, because the mean of its divisors is an integer number (1891379040).

Almost surely, 2^20001332079 is an apocalyptic number.

20001332079 is a deficient number, since it is larger than the sum of its proper divisors (10260732561).

20001332079 is a wasteful number, since it uses less digits than its factorization.

20001332079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15761547 (or 15761541 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The spelling of 20001332079 in words is "twenty billion, one million, three hundred thirty-two thousand, seventy-nine".