11429911223556 has 192 divisors, whose sum is σ = 32454884044800. Its totient is φ = 3058065432576.

The previous prime is 11429911223513. The next prime is 11429911223671. The reversal of 11429911223556 is 65532211992411.

It is a junction number, because it is equal to n+sod(n) for n = 11429911223499 and 11429911223508.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 513762025 + ... + 513784271.

It is an arithmetic number, because the mean of its divisors is an integer number (169035854400).

Almost surely, 2^{11429911223556} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11429911223556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16227442022400).

11429911223556 is an abundant number, since it is smaller than the sum of its proper divisors (21024972821244).

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

11429911223556 is a wasteful number, since it uses less digits than its factorization.

11429911223556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25986 (or 25984 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 51.

The spelling of 11429911223556 in words is "eleven trillion, four hundred twenty-nine billion, nine hundred eleven million, two hundred twenty-three thousand, five hundred fifty-six".