11867821473 has 8 divisors (see below), whose sum is σ = 15824416608. Its totient is φ = 7911553664.

The previous prime is 11867821463. The next prime is 11867821489. The reversal of 11867821473 is 37412876811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11867821473 - 2¹⁸ = 11867559329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11867821453) 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, 21361 + ... + 155537.

It is an arithmetic number, because the mean of its divisors is an integer number (1978052076).

Almost surely, 2^11867821473 is an apocalyptic number.

It is an amenable number.

11867821473 is a deficient number, since it is larger than the sum of its proper divisors (3956595135).

11867821473 is a wasteful number, since it uses less digits than its factorization.

11867821473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163663.

The product of its digits is 451584, while the sum is 48.

The spelling of 11867821473 in words is "eleven billion, eight hundred sixty-seven million, eight hundred twenty-one thousand, four hundred seventy-three".