11813421487 has 8 divisors (see below), whose sum is σ = 13549795616. Its totient is φ = 10089232992.

The previous prime is 11813421461. The next prime is 11813421523. The reversal of 11813421487 is 78412431811.

It is a happy number.

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 11813421487 - 2³¹ = 9665937839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11813421427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3044328 + ... + 3048205.

It is an arithmetic number, because the mean of its divisors is an integer number (1693724452).

Almost surely, 2^11813421487 is an apocalyptic number.

11813421487 is a deficient number, since it is larger than the sum of its proper divisors (1736374129).

11813421487 is an equidigital number, since it uses as much as digits as its factorization.

11813421487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6092817.

The product of its digits is 43008, while the sum is 40.

The spelling of 11813421487 in words is "eleven billion, eight hundred thirteen million, four hundred twenty-one thousand, four hundred eighty-seven".