11671357563 has 24 divisors (see below), whose sum is σ = 17765027280. Its totient is φ = 7363448640.

The previous prime is 11671357559. The next prime is 11671357571. The reversal of 11671357563 is 36575317611.

11671357563 is a `hidden beast` number, since 1 + 1 + 6 + 7 + 13 + 575 + 63 = 666.

It is not a de Polignac number, because 11671357563 - 2² = 11671357559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11671357543) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124645 + ... + 197177.

It is an arithmetic number, because the mean of its divisors is an integer number (740209470).

Almost surely, 2^11671357563 is an apocalyptic number.

11671357563 is a deficient number, since it is larger than the sum of its proper divisors (6093669717).

11671357563 is a wasteful number, since it uses less digits than its factorization.

11671357563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73499 (or 73496 counting only the distinct ones).

The product of its digits is 396900, while the sum is 45.

The spelling of 11671357563 in words is "eleven billion, six hundred seventy-one million, three hundred fifty-seven thousand, five hundred sixty-three".