20017506442040 has 64 divisors (see below), whose sum is σ = 46247504022720. Its totient is φ = 7793154432000.

The previous prime is 20017506442019. The next prime is 20017506442121. The reversal of 20017506442040 is 4024460571002.

It is a happy number.

It is a super-2 number, since 2×20017506442040² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13805756 + ... + 15186635.

It is an arithmetic number, because the mean of its divisors is an integer number (722617250355).

Almost surely, 2^{20017506442040} is an apocalyptic number.

20017506442040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20017506442040 is an abundant number, since it is smaller than the sum of its proper divisors (26229997580680).

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

20017506442040 is a wasteful number, since it uses less digits than its factorization.

20017506442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28992864 (or 28992860 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 20017506442040 in words is "twenty trillion, seventeen billion, five hundred six million, four hundred forty-two thousand, forty".