155140252726161 has 48 divisors (see below), whose sum is σ = 216672942081024. Its totient is φ = 98727288726528.

The previous prime is 155140252726139. The next prime is 155140252726163. The reversal of 155140252726161 is 161627252041551.

It is not a de Polignac number, because 155140252726161 - 2¹⁷ = 155140252595089 is a prime.

It is a super-3 number, since 3×155140252726161³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155140252726161.

It is not an unprimeable number, because it can be changed into a prime (155140252726163) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112498960 + ... + 113869646.

It is an arithmetic number, because the mean of its divisors is an integer number (4514019626688).

Almost surely, 2^{155140252726161} is an apocalyptic number.

It is an amenable number.

155140252726161 is a deficient number, since it is larger than the sum of its proper divisors (61532689354863).

155140252726161 is a wasteful number, since it uses less digits than its factorization.

155140252726161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371258 (or 1371229 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 48.

The spelling of 155140252726161 in words is "one hundred fifty-five trillion, one hundred forty billion, two hundred fifty-two million, seven hundred twenty-six thousand, one hundred sixty-one".