11670376421 has 4 divisors (see below), whose sum is σ = 12731319744. Its totient is φ = 10609433100.

The previous prime is 11670376369. The next prime is 11670376447. The reversal of 11670376421 is 12467307611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11670376421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11670376481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530471645 + ... + 530471666.

It is an arithmetic number, because the mean of its divisors is an integer number (3182829936).

Almost surely, 2^11670376421 is an apocalyptic number.

11670376421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11670376421 is a deficient number, since it is larger than the sum of its proper divisors (1060943323).

11670376421 is a wasteful number, since it uses less digits than its factorization.

11670376421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1060943322.

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 11670376421 in words is "eleven billion, six hundred seventy million, three hundred seventy-six thousand, four hundred twenty-one".