11621831603826 has 64 divisors (see below), whose sum is σ = 23514564632832. Its totient is φ = 3828945745152.

The previous prime is 11621831603743. The next prime is 11621831603827. The reversal of 11621831603826 is 62830613812611.

It is not an unprimeable number, because it can be changed into a prime (11621831603827) 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 31 ways as a sum of consecutive naturals, for example, 765947176 + ... + 765962348.

It is an arithmetic number, because the mean of its divisors is an integer number (367415072388).

Almost surely, 2^{11621831603826} is an apocalyptic number.

11621831603826 is an abundant number, since it is smaller than the sum of its proper divisors (11892733029006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11621831603826 is a wasteful number, since it uses less digits than its factorization.

11621831603826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17587.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 11621831603826 in words is "eleven trillion, six hundred twenty-one billion, eight hundred thirty-one million, six hundred three thousand, eight hundred twenty-six".