20400143102 has 16 divisors (see below), whose sum is σ = 30724459920. Its totient is φ = 10158690048.

The previous prime is 20400143087. The next prime is 20400143129. The reversal of 20400143102 is 20134100402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1465049 + ... + 1478907.

It is an arithmetic number, because the mean of its divisors is an integer number (1920278745).

Almost surely, 2^20400143102 is an apocalyptic number.

20400143102 is a deficient number, since it is larger than the sum of its proper divisors (10324316818).

20400143102 is a wasteful number, since it uses less digits than its factorization.

20400143102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795.

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

Adding to 20400143102 its reverse (20134100402), we get a palindrome (40534243504).

The spelling of 20400143102 in words is "twenty billion, four hundred million, one hundred forty-three thousand, one hundred two".