11156540601 has 8 divisors (see below), whose sum is σ = 14877364320. Its totient is φ = 7436705312.

The previous prime is 11156540491. The next prime is 11156540623. The reversal of 11156540601 is 10604565111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11156540601 - 2⁹ = 11156540089 is a prime.

It is a super-2 number, since 2×11156540601² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11156540401) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 220356 + ... + 266213.

It is an arithmetic number, because the mean of its divisors is an integer number (1859670540).

Almost surely, 2^11156540601 is an apocalyptic number.

It is an amenable number.

11156540601 is a deficient number, since it is larger than the sum of its proper divisors (3720823719).

11156540601 is an equidigital number, since it uses as much as digits as its factorization.

11156540601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494215.

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 11156540601 in words is "eleven billion, one hundred fifty-six million, five hundred forty thousand, six hundred one".