20533122040 has 16 divisors (see below), whose sum is σ = 46199524680. Its totient is φ = 8213248800.

The previous prime is 20533122031. The next prime is 20533122067. The reversal of 20533122040 is 4022133502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256663986 + ... + 256664065.

Almost surely, 2^20533122040 is an apocalyptic number.

20533122040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20533122040 is an abundant number, since it is smaller than the sum of its proper divisors (25666402640).

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

20533122040 is a wasteful number, since it uses less digits than its factorization.

20533122040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513328062 (or 513328058 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 20533122040 its reverse (4022133502), we get a palindrome (24555255542).

The spelling of 20533122040 in words is "twenty billion, five hundred thirty-three million, one hundred twenty-two thousand, forty".