20069986540 has 12 divisors (see below), whose sum is σ = 42146971776. Its totient is φ = 8027994608.

The previous prime is 20069986537. The next prime is 20069986549. The reversal of 20069986540 is 4568996002.

It is not an unprimeable number, because it can be changed into a prime (20069986549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501749644 + ... + 501749683.

It is an arithmetic number, because the mean of its divisors is an integer number (3512247648).

Almost surely, 2^20069986540 is an apocalyptic number.

20069986540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20069986540 is an abundant number, since it is smaller than the sum of its proper divisors (22076985236).

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

20069986540 is a wasteful number, since it uses less digits than its factorization.

20069986540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003499336 (or 1003499334 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 20069986540 in words is "twenty billion, sixty-nine million, nine hundred eighty-six thousand, five hundred forty".