1663570471376 has 40 divisors (see below), whose sum is σ = 3523877266944. Its totient is φ = 754513724160.

The previous prime is 1663570471357. The next prime is 1663570471379. The reversal of 1663570471376 is 6731740753661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1663570471379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10261040 + ... + 10421903.

Almost surely, 2^{1663570471376} is an apocalyptic number.

1663570471376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1663570471376 is an abundant number, since it is smaller than the sum of its proper divisors (1860306795568).

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

1663570471376 is a wasteful number, since it uses less digits than its factorization.

1663570471376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20683419 (or 20683413 counting only the distinct ones).

The product of its (nonzero) digits is 13335840, while the sum is 56.

The spelling of 1663570471376 in words is "one trillion, six hundred sixty-three billion, five hundred seventy million, four hundred seventy-one thousand, three hundred seventy-six".