1566406476396 has 18 divisors (see below), whose sum is σ = 3959527482092. Its totient is φ = 522135492120.

The previous prime is 1566406476353. The next prime is 1566406476409. The reversal of 1566406476396 is 6936746046651.

1566406476396 is a `hidden beast` number, since 1 + 566 + 4 + 0 + 6 + 4 + 7 + 63 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21755645470 + ... + 21755645541.

Almost surely, 2^{1566406476396} is an apocalyptic number.

It is an amenable number.

1566406476396 is an abundant number, since it is smaller than the sum of its proper divisors (2393121005696).

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

1566406476396 is a wasteful number, since it uses less digits than its factorization.

1566406476396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43511291021 (or 43511291016 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 63.

The spelling of 1566406476396 in words is "one trillion, five hundred sixty-six billion, four hundred six million, four hundred seventy-six thousand, three hundred ninety-six".