1155115645660 has 48 divisors (see below), whose sum is σ = 2466021976992. Its totient is φ = 454377196800.

The previous prime is 1155115645637. The next prime is 1155115645661. The reversal of 1155115645660 is 665465115511.

It is a self number, because there is not a number n which added to its sum of digits gives 1155115645660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155115645661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5919814 + ... + 6111826.

It is an arithmetic number, because the mean of its divisors is an integer number (51375457854).

Almost surely, 2^{1155115645660} is an apocalyptic number.

1155115645660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1155115645660 is an abundant number, since it is smaller than the sum of its proper divisors (1310906331332).

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

1155115645660 is a wasteful number, since it uses less digits than its factorization.

1155115645660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197014 (or 197012 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 46.

The spelling of 1155115645660 in words is "one trillion, one hundred fifty-five billion, one hundred fifteen million, six hundred forty-five thousand, six hundred sixty".