11156540252 has 36 divisors (see below), whose sum is σ = 23111002488. Its totient is φ = 4681063200.

The previous prime is 11156540249. The next prime is 11156540279. The reversal of 11156540252 is 25204565111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 880274 + ... + 892857.

Almost surely, 2^11156540252 is an apocalyptic number.

It is an amenable number.

11156540252 is an abundant number, since it is smaller than the sum of its proper divisors (11954462236).

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

11156540252 is a wasteful number, since it uses less digits than its factorization.

11156540252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773170 (or 1773157 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 32.

The spelling of 11156540252 in words is "eleven billion, one hundred fifty-six million, five hundred forty thousand, two hundred fifty-two".