20147255029 has 4 divisors (see below), whose sum is σ = 21978823680. Its totient is φ = 18315686380.

The previous prime is 20147254997. The next prime is 20147255039. The reversal of 20147255029 is 92055274102.

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 a cyclic number.

It is not a de Polignac number, because 20147255029 - 2⁵ = 20147254997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147255039) 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, 915784309 + ... + 915784330.

It is an arithmetic number, because the mean of its divisors is an integer number (5494705920).

Almost surely, 2^20147255029 is an apocalyptic number.

It is an amenable number.

20147255029 is a deficient number, since it is larger than the sum of its proper divisors (1831568651).

20147255029 is a wasteful number, since it uses less digits than its factorization.

20147255029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1831568650.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 20147255029 in words is "twenty billion, one hundred forty-seven million, two hundred fifty-five thousand, twenty-nine".