20108462129 has 4 divisors (see below), whose sum is σ = 22981099584. Its totient is φ = 17235824676.

The previous prime is 20108462107. The next prime is 20108462137. The reversal of 20108462129 is 92126480102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 92126480102 = 2 ⋅46063240051.

It is not a de Polignac number, because 20108462129 - 2¹⁶ = 20108396593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20108462629) 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, 1436318717 + ... + 1436318730.

It is an arithmetic number, because the mean of its divisors is an integer number (5745274896).

Almost surely, 2^20108462129 is an apocalyptic number.

It is an amenable number.

20108462129 is a deficient number, since it is larger than the sum of its proper divisors (2872637455).

20108462129 is an equidigital number, since it uses as much as digits as its factorization.

20108462129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2872637454.

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 20108462129 in words is "twenty billion, one hundred eight million, four hundred sixty-two thousand, one hundred twenty-nine".