20412210402 has 24 divisors (see below), whose sum is σ = 44295476940. Its totient is φ = 6793451520.

The previous prime is 20412210389. The next prime is 20412210439. The reversal of 20412210402 is 20401221402.

20412210402 is a `hidden beast` number, since 2 + 0 + 41 + 221 + 0 + 402 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20235347001 + 176863401 = 142251^2 + 13299^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 873027 + ... + 896102.

Almost surely, 2^20412210402 is an apocalyptic number.

20412210402 is an abundant number, since it is smaller than the sum of its proper divisors (23883266538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20412210402 is a wasteful number, since it uses less digits than its factorization.

20412210402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769778 (or 1769775 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20412210402 its reverse (20401221402), we get a palindrome (40813431804).

The spelling of 20412210402 in words is "twenty billion, four hundred twelve million, two hundred ten thousand, four hundred two".