20408471402 has 16 divisors (see below), whose sum is σ = 34172325792. Its totient is φ = 9060843120.

The previous prime is 20408471381. The next prime is 20408471437. The reversal of 20408471402 is 20417480402.

20408471402 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 10785773 + ... + 10787664.

It is an arithmetic number, because the mean of its divisors is an integer number (2135770362).

Almost surely, 2^20408471402 is an apocalyptic number.

20408471402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20408471402 is a deficient number, since it is larger than the sum of its proper divisors (13763854390).

20408471402 is a wasteful number, since it uses less digits than its factorization.

20408471402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21573493.

The product of its (nonzero) digits is 14336, while the sum is 32.

The spelling of 20408471402 in words is "twenty billion, four hundred eight million, four hundred seventy-one thousand, four hundred two".