1101605001156 has 96 divisors (see below), whose sum is σ = 3132864658560. Its totient is φ = 331975324800.

The previous prime is 1101605001067. The next prime is 1101605001193. The reversal of 1101605001156 is 6511005061011.

1101605001156 is a `hidden beast` number, since 1 + 1 + 0 + 1 + 6 + 0 + 500 + 1 + 156 = 666.

It is a super-2 number, since 2×1101605001156² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2346511 + ... + 2776566.

It is an arithmetic number, because the mean of its divisors is an integer number (32634006860).

Almost surely, 2^{1101605001156} is an apocalyptic number.

It is an amenable number.

1101605001156 is an abundant number, since it is smaller than the sum of its proper divisors (2031259657404).

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

1101605001156 is a wasteful number, since it uses less digits than its factorization.

1101605001156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123282 (or 5123274 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 1101605001156 in words is "one trillion, one hundred one billion, six hundred five million, one thousand, one hundred fifty-six".