1155328777206 has 24 divisors (see below), whose sum is σ = 2508130272960. Its totient is φ = 384352988976.

The previous prime is 1155328777201. The next prime is 1155328777259. The reversal of 1155328777206 is 6027778235511.

1155328777206 is a `hidden beast` number, since 1 + 1 + 5 + 532 + 87 + 7 + 7 + 20 + 6 = 666.

It is a super-2 number, since 2×1155328777206² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155328777201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63040870 + ... + 63059193.

It is an arithmetic number, because the mean of its divisors is an integer number (104505428040).

Almost surely, 2^{1155328777206} is an apocalyptic number.

1155328777206 is an abundant number, since it is smaller than the sum of its proper divisors (1352801495754).

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

1155328777206 is a wasteful number, since it uses less digits than its factorization.

1155328777206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126100580 (or 126100577 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The spelling of 1155328777206 in words is "one trillion, one hundred fifty-five billion, three hundred twenty-eight million, seven hundred seventy-seven thousand, two hundred six".