20130506337 has 4 divisors (see below), whose sum is σ = 26840675120. Its totient is φ = 13420337556.

The previous prime is 20130506329. The next prime is 20130506369. The reversal of 20130506337 is 73360503102.

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 not a de Polignac number, because 20130506337 - 2³ = 20130506329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20130506387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3355084387 + ... + 3355084392.

It is an arithmetic number, because the mean of its divisors is an integer number (6710168780).

Almost surely, 2^20130506337 is an apocalyptic number.

It is an amenable number.

20130506337 is a deficient number, since it is larger than the sum of its proper divisors (6710168783).

20130506337 is an equidigital number, since it uses as much as digits as its factorization.

20130506337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710168782.

The product of its (nonzero) digits is 11340, while the sum is 30.

The spelling of 20130506337 in words is "twenty billion, one hundred thirty million, five hundred six thousand, three hundred thirty-seven".