20469209046 has 64 divisors (see below), whose sum is σ = 49647015936. Its totient is φ = 5540947200.

The previous prime is 20469209039. The next prime is 20469209063. The reversal of 20469209046 is 64090296402.

It is a junction number, because it is equal to n+sod(n) for n = 20469208989 and 20469209007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 358191 + ... + 411386.

It is an arithmetic number, because the mean of its divisors is an integer number (775734624).

Almost surely, 2^20469209046 is an apocalyptic number.

20469209046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20469209046 is an abundant number, since it is smaller than the sum of its proper divisors (29177806890).

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

20469209046 is a wasteful number, since it uses less digits than its factorization.

20469209046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769637.

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 20469209046 in words is "twenty billion, four hundred sixty-nine million, two hundred nine thousand, forty-six".