1155860445816 has 48 divisors (see below), whose sum is σ = 3266562134160. Its totient is φ = 368535214080.

The previous prime is 1155860445809. The next prime is 1155860445881. The reversal of 1155860445816 is 6185440685511.

It is a happy number.

1155860445816 is a `hidden beast` number, since 1 + 1 + 5 + 58 + 6 + 0 + 4 + 4 + 581 + 6 = 666.

It is a super-3 number, since 3×1155860445816³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348990025 + ... + 348993336.

It is an arithmetic number, because the mean of its divisors is an integer number (68053377795).

Almost surely, 2^{1155860445816} is an apocalyptic number.

It is an amenable number.

1155860445816 is an abundant number, since it is smaller than the sum of its proper divisors (2110701688344).

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

1155860445816 is a wasteful number, since it uses less digits than its factorization.

1155860445816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697983396 (or 697983389 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 1155860445816 in words is "one trillion, one hundred fifty-five billion, eight hundred sixty million, four hundred forty-five thousand, eight hundred sixteen".