20400201134 has 4 divisors (see below), whose sum is σ = 30600301704. Its totient is φ = 10200100566.

The previous prime is 20400201097. The next prime is 20400201197. The reversal of 20400201134 is 43110200402.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5100050282 + ... + 5100050285.

It is an arithmetic number, because the mean of its divisors is an integer number (7650075426).

Almost surely, 2^20400201134 is an apocalyptic number.

20400201134 is a deficient number, since it is larger than the sum of its proper divisors (10200100570).

20400201134 is a wasteful number, since it uses less digits than its factorization.

20400201134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200100569.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20400201134 its reverse (43110200402), we get a palindrome (63510401536).

The spelling of 20400201134 in words is "twenty billion, four hundred million, two hundred one thousand, one hundred thirty-four".