20144342402 has 16 divisors (see below), whose sum is σ = 31671682560. Its totient is φ = 9591042912.

The previous prime is 20144342377. The next prime is 20144342411. The reversal of 20144342402 is 20424344102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971627 + ... + 992142.

It is an arithmetic number, because the mean of its divisors is an integer number (1979480160).

Almost surely, 2^20144342402 is an apocalyptic number.

20144342402 is a deficient number, since it is larger than the sum of its proper divisors (11527340158).

20144342402 is a wasteful number, since it uses less digits than its factorization.

20144342402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964017.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20144342402 its reverse (20424344102), we get a palindrome (40568686504).

The spelling of 20144342402 in words is "twenty billion, one hundred forty-four million, three hundred forty-two thousand, four hundred two".