2069809907440 has 80 divisors (see below), whose sum is σ = 5250488099040. Its totient is φ = 752558146560.

The previous prime is 2069809907419. The next prime is 2069809907449. The reversal of 2069809907440 is 447099089602.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2069809907440² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069809907449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6638566 + ... + 6943354.

It is an arithmetic number, because the mean of its divisors is an integer number (65631101238).

Almost surely, 2^{2069809907440} is an apocalyptic number.

2069809907440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2069809907440 is an abundant number, since it is smaller than the sum of its proper divisors (3180678191600).

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

2069809907440 is a wasteful number, since it uses less digits than its factorization.

2069809907440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312530 (or 312524 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 2069809907440 in words is "two trillion, sixty-nine billion, eight hundred nine million, nine hundred seven thousand, four hundred forty".