156405620611066 has 8 divisors (see below), whose sum is σ = 234875943383220. Its totient is φ = 78113639483328.

The previous prime is 156405620611027. The next prime is 156405620611091. The reversal of 156405620611066 is 660116026504651.

156405620611066 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 145409134562041 + 10996486049025 = 12058571^2 + 3316095^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44585408911 + ... + 44585412418.

Almost surely, 2^{156405620611066} is an apocalyptic number.

156405620611066 is a deficient number, since it is larger than the sum of its proper divisors (78470322772154).

156405620611066 is an equidigital number, since it uses as much as digits as its factorization.

156405620611066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89170822208.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 156405620611066 in words is "one hundred fifty-six trillion, four hundred five billion, six hundred twenty million, six hundred eleven thousand, sixty-six".