20029134897 has 8 divisors (see below), whose sum is σ = 29672792480. Its totient is φ = 13352756580.

The previous prime is 20029134857. The next prime is 20029134901. The reversal of 20029134897 is 79843192002.

It is not a de Polignac number, because 20029134897 - 2⁶ = 20029134833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20029134857) 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, 370909879 + ... + 370909932.

It is an arithmetic number, because the mean of its divisors is an integer number (3709099060).

Almost surely, 2^20029134897 is an apocalyptic number.

20029134897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20029134897 is a deficient number, since it is larger than the sum of its proper divisors (9643657583).

20029134897 is an equidigital number, since it uses as much as digits as its factorization.

20029134897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741819820 (or 741819814 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 20029134897 in words is "twenty billion, twenty-nine million, one hundred thirty-four thousand, eight hundred ninety-seven".