601161555156 has 48 divisors (see below), whose sum is σ = 1429653867264. Its totient is φ = 196540629376.

The previous prime is 601161555151. The next prime is 601161555173. The reversal of 601161555156 is 651555161106.

It is a super-2 number, since 2×601161555156² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (601161555151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766290 + ... + 2078966.

It is an arithmetic number, because the mean of its divisors is an integer number (29784455568).

Almost surely, 2^601161555156 is an apocalyptic number.

It is an amenable number.

601161555156 is an abundant number, since it is smaller than the sum of its proper divisors (828492312108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

601161555156 is a wasteful number, since it uses less digits than its factorization.

601161555156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315760 (or 315758 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 601161555156 in words is "six hundred one billion, one hundred sixty-one million, five hundred fifty-five thousand, one hundred fifty-six".