1155166556051 has 8 divisors (see below), whose sum is σ = 1210126468800. Its totient is φ = 1101215082240.

The previous prime is 1155166556023. The next prime is 1155166556053. The reversal of 1155166556051 is 1506556615511.

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 1155166556051 - 2¹⁸ = 1155166293907 is a prime.

It is a super-3 number, since 3×1155166556051³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1155166555987 and 1155166556005.

It is not an unprimeable number, because it can be changed into a prime (1155166556053) 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, 252107390 + ... + 252111971.

It is an arithmetic number, because the mean of its divisors is an integer number (151265808600).

Almost surely, 2^{1155166556051} is an apocalyptic number.

1155166556051 is a deficient number, since it is larger than the sum of its proper divisors (54959912749).

1155166556051 is an equidigital number, since it uses as much as digits as its factorization.

1155166556051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504219469.

The product of its (nonzero) digits is 675000, while the sum is 47.

The spelling of 1155166556051 in words is "one trillion, one hundred fifty-five billion, one hundred sixty-six million, five hundred fifty-six thousand, fifty-one".