20147422739 has 8 divisors (see below), whose sum is σ = 20448953280. Its totient is φ = 19847292136.

The previous prime is 20147422727. The next prime is 20147422751. The reversal of 20147422739 is 93722474102.

It is an interprime number because it is at equal distance from previous prime (20147422727) and next prime (20147422751).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20147422739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20147422696 and 20147422705.

It is not an unprimeable number, because it can be changed into a prime (20147422639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320969 + ... + 378570.

It is an arithmetic number, because the mean of its divisors is an integer number (2556119160).

Almost surely, 2^20147422739 is an apocalyptic number.

20147422739 is a deficient number, since it is larger than the sum of its proper divisors (301530541).

20147422739 is an equidigital number, since it uses as much as digits as its factorization.

20147422739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699969.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 20147422739 in words is "twenty billion, one hundred forty-seven million, four hundred twenty-two thousand, seven hundred thirty-nine".