1906566275440 has 20 divisors (see below), whose sum is σ = 4432766590584. Its totient is φ = 762626510144.

The previous prime is 1906566275389. The next prime is 1906566275513. The reversal of 1906566275440 is 445726656091.

It is a tau number, because it is divible by the number of its divisors (20).

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, 11916039142 + ... + 11916039301.

Almost surely, 2^{1906566275440} is an apocalyptic number.

1906566275440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1906566275440 is an abundant number, since it is smaller than the sum of its proper divisors (2526200315144).

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

1906566275440 is a wasteful number, since it uses less digits than its factorization.

1906566275440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23832078456 (or 23832078450 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 1906566275440 in words is "one trillion, nine hundred six billion, five hundred sixty-six million, two hundred seventy-five thousand, four hundred forty".