156161111601 has 8 divisors (see below), whose sum is σ = 227143435104. Its totient is φ = 94643097920.

The previous prime is 156161111539. The next prime is 156161111609. The reversal of 156161111601 is 106111161651.

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 156161111601 - 2⁶ = 156161111537 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (156161111609) 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, 2366077416 + ... + 2366077481.

It is an arithmetic number, because the mean of its divisors is an integer number (28392929388).

Almost surely, 2^156161111601 is an apocalyptic number.

156161111601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156161111601 is a deficient number, since it is larger than the sum of its proper divisors (70982323503).

156161111601 is a wasteful number, since it uses less digits than its factorization.

156161111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732154911.

The product of its (nonzero) digits is 1080, while the sum is 30.

It can be divided in two parts, 156161 and 111601, that added together give a palindrome (267762).

The spelling of 156161111601 in words is "one hundred fifty-six billion, one hundred sixty-one million, one hundred eleven thousand, six hundred one".