156066155651161 has 4 divisors (see below), whose sum is σ = 178361320744192. Its totient is φ = 133770990558132.

The previous prime is 156066155651123. The next prime is 156066155651183. The reversal of 156066155651161 is 161156551660651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 156066155651161 - 2²¹ = 156066153554009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156066155951161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11147582546505 + ... + 11147582546518.

It is an arithmetic number, because the mean of its divisors is an integer number (44590330186048).

Almost surely, 2^{156066155651161} is an apocalyptic number.

It is an amenable number.

156066155651161 is a deficient number, since it is larger than the sum of its proper divisors (22295165093031).

156066155651161 is an equidigital number, since it uses as much as digits as its factorization.

156066155651161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22295165093030.

The product of its (nonzero) digits is 4860000, while the sum is 55.

The spelling of 156066155651161 in words is "one hundred fifty-six trillion, sixty-six billion, one hundred fifty-five million, six hundred fifty-one thousand, one hundred sixty-one".