12311900824542 has 32 divisors (see below), whose sum is σ = 27123128398080. Its totient is φ = 3694656909120.

The previous prime is 12311900824537. The next prime is 12311900824583. The reversal of 12311900824542 is 24542800911321.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12311900824494 and 12311900824503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 905546367 + ... + 905559962.

It is an arithmetic number, because the mean of its divisors is an integer number (847597762440).

Almost surely, 2^{12311900824542} is an apocalyptic number.

12311900824542 is an abundant number, since it is smaller than the sum of its proper divisors (14811227573538).

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

12311900824542 is a wasteful number, since it uses less digits than its factorization.

12311900824542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811106448.

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 12311900824542 in words is "twelve trillion, three hundred eleven billion, nine hundred million, eight hundred twenty-four thousand, five hundred forty-two".