156105160556661 has 24 divisors (see below), whose sum is σ = 238805127624960. Its totient is φ = 97925337661056.

The previous prime is 156105160556629. The next prime is 156105160556677. The reversal of 156105160556661 is 166655061501651.

It is not a de Polignac number, because 156105160556661 - 2⁵ = 156105160556629 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 156105160556598 and 156105160556607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156105160555661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119129445 + ... + 120432698.

It is an arithmetic number, because the mean of its divisors is an integer number (9950213651040).

Almost surely, 2^{156105160556661} is an apocalyptic number.

It is an amenable number.

156105160556661 is a deficient number, since it is larger than the sum of its proper divisors (82699967068299).

156105160556661 is a wasteful number, since it uses less digits than its factorization.

156105160556661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239566425 (or 239566422 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 54.

The spelling of 156105160556661 in words is "one hundred fifty-six trillion, one hundred five billion, one hundred sixty million, five hundred fifty-six thousand, six hundred sixty-one".