11670451563 has 4 divisors (see below), whose sum is σ = 15560602088. Its totient is φ = 7780301040.

The previous prime is 11670451531. The next prime is 11670451571. The reversal of 11670451563 is 36515407611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36515407611 = 3 ⋅12171802537.

It is not a de Polignac number, because 11670451563 - 2⁵ = 11670451531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11670451963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1945075258 + ... + 1945075263.

It is an arithmetic number, because the mean of its divisors is an integer number (3890150522).

Almost surely, 2^11670451563 is an apocalyptic number.

11670451563 is a deficient number, since it is larger than the sum of its proper divisors (3890150525).

11670451563 is an equidigital number, since it uses as much as digits as its factorization.

11670451563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890150524.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 11670451563 in words is "eleven billion, six hundred seventy million, four hundred fifty-one thousand, five hundred sixty-three".