11156143601 has 2 divisors, whose sum is σ = 11156143602. Its totient is φ = 11156143600.

The previous prime is 11156143591. The next prime is 11156143613. The reversal of 11156143601 is 10634165111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8686053601 + 2470090000 = 93199^2 + 49700^2 .

It is a cyclic number.

It is not a de Polignac number, because 11156143601 - 2²² = 11151949297 is a prime.

It is a super-2 number, since 2×11156143601² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11156143651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578071800 + 5578071801.

It is an arithmetic number, because the mean of its divisors is an integer number (5578071801).

Almost surely, 2^11156143601 is an apocalyptic number.

It is an amenable number.

11156143601 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156143601 is an equidigital number, since it uses as much as digits as its factorization.

11156143601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 11156143601 in words is "eleven billion, one hundred fifty-six million, one hundred forty-three thousand, six hundred one".