20103999979 has 8 divisors (see below), whose sum is σ = 23095048160. Its totient is φ = 17142713856.

The previous prime is 20103999973. The next prime is 20103999989. The reversal of 20103999979 is 97999930102.

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 20103999979 - 2¹¹ = 20103997931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20103999973) 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, 7439064 + ... + 7441765.

It is an arithmetic number, because the mean of its divisors is an integer number (2886881020).

Almost surely, 2^20103999979 is an apocalyptic number.

20103999979 is a deficient number, since it is larger than the sum of its proper divisors (2991048181).

20103999979 is a wasteful number, since it uses less digits than its factorization.

20103999979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14881029.

The product of its (nonzero) digits is 2480058, while the sum is 58.

The spelling of 20103999979 in words is "twenty billion, one hundred three million, nine hundred ninety-nine thousand, nine hundred seventy-nine".