20066115440 has 60 divisors (see below), whose sum is σ = 54270662616. Its totient is φ = 6879809664.

The previous prime is 20066115439. The next prime is 20066115467. The reversal of 20066115440 is 4451166002.

It is a congruent number.

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, 2555534 + ... + 2563373.

Almost surely, 2^20066115440 is an apocalyptic number.

20066115440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20066115440 is an abundant number, since it is smaller than the sum of its proper divisors (34204547176).

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

20066115440 is a wasteful number, since it uses less digits than its factorization.

20066115440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118934 (or 5118921 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 20066115440 in words is "twenty billion, sixty-six million, one hundred fifteen thousand, four hundred forty".