20012406502 has 32 divisors (see below), whose sum is σ = 32912399520. Its totient is φ = 9050849280.

The previous prime is 20012406439. The next prime is 20012406503. The reversal of 20012406502 is 20560421002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012406503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7331874 + ... + 7334602.

It is an arithmetic number, because the mean of its divisors is an integer number (1028512485).

Almost surely, 2^20012406502 is an apocalyptic number.

20012406502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20012406502 is a deficient number, since it is larger than the sum of its proper divisors (12899993018).

20012406502 is a wasteful number, since it uses less digits than its factorization.

20012406502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4296.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20012406502 its reverse (20560421002), we get a palindrome (40572827504).

The spelling of 20012406502 in words is "twenty billion, twelve million, four hundred six thousand, five hundred two".