1011555106156 has 48 divisors (see below), whose sum is σ = 2102388019200. Its totient is φ = 416723232960.

The previous prime is 1011555106087. The next prime is 1011555106169. The reversal of 1011555106156 is 6516015551101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3781360 + ... + 4040023.

It is an arithmetic number, because the mean of its divisors is an integer number (43799750400).

Almost surely, 2^{1011555106156} is an apocalyptic number.

It is an amenable number.

1011555106156 is an abundant number, since it is smaller than the sum of its proper divisors (1090832913044).

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

1011555106156 is a wasteful number, since it uses less digits than its factorization.

1011555106156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821574 (or 7821572 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 37.

The spelling of 1011555106156 in words is "one trillion, eleven billion, five hundred fifty-five million, one hundred six thousand, one hundred fifty-six".