20138046501 has 8 divisors (see below), whose sum is σ = 26854665120. Its totient is φ = 13423396112.

The previous prime is 20138046479. The next prime is 20138046503. The reversal of 20138046501 is 10564083102.

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 20138046501 - 2⁵ = 20138046469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20138046503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468015 + ... + 509228.

It is an arithmetic number, because the mean of its divisors is an integer number (3356833140).

Almost surely, 2^20138046501 is an apocalyptic number.

It is an amenable number.

20138046501 is a deficient number, since it is larger than the sum of its proper divisors (6716618619).

20138046501 is an equidigital number, since it uses as much as digits as its factorization.

20138046501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984115.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20138046501 in words is "twenty billion, one hundred thirty-eight million, forty-six thousand, five hundred one".