20333346440 has 32 divisors (see below), whose sum is σ = 49909124160. Its totient is φ = 7393944000.

The previous prime is 20333346427. The next prime is 20333346457. The reversal of 20333346440 is 4464333302.

It is a junction number, because it is equal to n+sod(n) for n = 20333346397 and 20333346406.

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, 23105636 + ... + 23106515.

It is an arithmetic number, because the mean of its divisors is an integer number (1559660130).

Almost surely, 2^20333346440 is an apocalyptic number.

20333346440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20333346440 is an abundant number, since it is smaller than the sum of its proper divisors (29575777720).

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

20333346440 is a wasteful number, since it uses less digits than its factorization.

20333346440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46212173 (or 46212169 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 20333346440 its reverse (4464333302), we get a palindrome (24797679742).

The spelling of 20333346440 in words is "twenty billion, three hundred thirty-three million, three hundred forty-six thousand, four hundred forty".