1611566061012 has 36 divisors (see below), whose sum is σ = 4160354942016. Its totient is φ = 525759139920.

The previous prime is 1611566060987. The next prime is 1611566061221. The reversal of 1611566061012 is 2101606651161.

1611566061012 is a `hidden beast` number, since 16 + 1 + 15 + 6 + 6 + 0 + 610 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 476229414 + ... + 476232797.

It is an arithmetic number, because the mean of its divisors is an integer number (115565415056).

Almost surely, 2^{1611566061012} is an apocalyptic number.

1611566061012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1611566061012 is an abundant number, since it is smaller than the sum of its proper divisors (2548788881004).

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

1611566061012 is a wasteful number, since it uses less digits than its factorization.

1611566061012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952462268 (or 952462263 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 1611566061012 in words is "one trillion, six hundred eleven billion, five hundred sixty-six million, sixty-one thousand, twelve".