20550142131 has 8 divisors (see below), whose sum is σ = 27405128400. Its totient is φ = 13697625312.

The previous prime is 20550142127. The next prime is 20550142163. The reversal of 20550142131 is 13124105502.

It is a happy number.

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

It is not a de Polignac number, because 20550142131 - 2² = 20550142127 is a prime.

It is a super-2 number, since 2×20550142131² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20550142331) 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, 597856 + ... + 631293.

It is an arithmetic number, because the mean of its divisors is an integer number (3425641050).

Almost surely, 2^20550142131 is an apocalyptic number.

20550142131 is a deficient number, since it is larger than the sum of its proper divisors (6854986269).

20550142131 is a wasteful number, since it uses less digits than its factorization.

20550142131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234725.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20550142131 its reverse (13124105502), we get a palindrome (33674247633).

The spelling of 20550142131 in words is "twenty billion, five hundred fifty million, one hundred forty-two thousand, one hundred thirty-one".