20185420626 has 24 divisors (see below), whose sum is σ = 49982946624. Its totient is φ = 5767263000.

The previous prime is 20185420613. The next prime is 20185420643. The reversal of 20185420626 is 62602458102.

It is a happy number.

20185420626 is a `hidden beast` number, since 2 + 0 + 1 + 8 + 5 + 4 + 20 + 626 = 666.

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, 80100750 + ... + 80101001.

It is an arithmetic number, because the mean of its divisors is an integer number (2082622776).

Almost surely, 2^20185420626 is an apocalyptic number.

20185420626 is an abundant number, since it is smaller than the sum of its proper divisors (29797525998).

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

20185420626 is a wasteful number, since it uses less digits than its factorization.

20185420626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160201766 (or 160201763 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 20185420626 its reverse (62602458102), we get a palindrome (82787878728).

The spelling of 20185420626 in words is "twenty billion, one hundred eighty-five million, four hundred twenty thousand, six hundred twenty-six".