1145120555311 has 8 divisors (see below), whose sum is σ = 1147068000000. Its totient is φ = 1143174541080.

The previous prime is 1145120555303. The next prime is 1145120555317. The reversal of 1145120555311 is 1135550215411.

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 1145120555311 - 2³ = 1145120555303 is a prime.

It is a super-2 number, since 2×1145120555311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145120555317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250940 + ... + 1963438.

It is an arithmetic number, because the mean of its divisors is an integer number (143383500000).

Almost surely, 2^{1145120555311} is an apocalyptic number.

1145120555311 is a deficient number, since it is larger than the sum of its proper divisors (1947444689).

1145120555311 is an equidigital number, since it uses as much as digits as its factorization.

1145120555311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715229.

The product of its (nonzero) digits is 15000, while the sum is 34.

The spelling of 1145120555311 in words is "one trillion, one hundred forty-five billion, one hundred twenty million, five hundred fifty-five thousand, three hundred eleven".