1611066156656 has 30 divisors (see below), whose sum is σ = 3431005047456. Its totient is φ = 732302797600.

The previous prime is 1611066156619. The next prime is 1611066156727. The reversal of 1611066156656 is 6566516601161.

It is a super-2 number, since 2×1611066156656² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 416079200 + ... + 416083071.

Almost surely, 2^{1611066156656} is an apocalyptic number.

1611066156656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1611066156656 is an abundant number, since it is smaller than the sum of its proper divisors (1819938890800).

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

1611066156656 is a wasteful number, since it uses less digits than its factorization.

1611066156656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832162301 (or 832162284 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 1611066156656 in words is "one trillion, six hundred eleven billion, sixty-six million, one hundred fifty-six thousand, six hundred fifty-six".