1556115161061 has 8 divisors (see below), whose sum is σ = 2080237501440. Its totient is φ = 1034701464032.

The previous prime is 1556115161033. The next prime is 1556115161071. The reversal of 1556115161061 is 1601615116551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1556115161061 - 2¹¹ = 1556115159013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556115161071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 677159496 + ... + 677161793.

It is an arithmetic number, because the mean of its divisors is an integer number (260029687680).

Almost surely, 2^{1556115161061} is an apocalyptic number.

It is an amenable number.

1556115161061 is a deficient number, since it is larger than the sum of its proper divisors (524122340379).

1556115161061 is a wasteful number, since it uses less digits than its factorization.

1556115161061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1354321675.

The product of its (nonzero) digits is 27000, while the sum is 39.

The spelling of 1556115161061 in words is "one trillion, five hundred fifty-six billion, one hundred fifteen million, one hundred sixty-one thousand, sixty-one".