11329812781572 has 12 divisors (see below), whose sum is σ = 26436229823696. Its totient is φ = 3776604260520.

The previous prime is 11329812781571. The next prime is 11329812781589. The reversal of 11329812781572 is 27518721892311.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (11329812781571) 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, 472075532554 + ... + 472075532577.

Almost surely, 2^{11329812781572} is an apocalyptic number.

11329812781572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11329812781572 is an abundant number, since it is smaller than the sum of its proper divisors (15106417042124).

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

11329812781572 is a wasteful number, since it uses less digits than its factorization.

11329812781572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944151065138 (or 944151065136 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 57.

The spelling of 11329812781572 in words is "eleven trillion, three hundred twenty-nine billion, eight hundred twelve million, seven hundred eighty-one thousand, five hundred seventy-two".