161255061623145 has 32 divisors (see below), whose sum is σ = 312211480658688. Its totient is φ = 69380329033728.

The previous prime is 161255061623143. The next prime is 161255061623153. The reversal of 161255061623145 is 541326160552161.

It is not a de Polignac number, because 161255061623145 - 2¹ = 161255061623143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161255061623094 and 161255061623103.

It is not an unprimeable number, because it can be changed into a prime (161255061623143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45169483264 + ... + 45169486833.

It is an arithmetic number, because the mean of its divisors is an integer number (9756608770584).

Almost surely, 2^{161255061623145} is an apocalyptic number.

161255061623145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161255061623145 is a deficient number, since it is larger than the sum of its proper divisors (150956419035543).

161255061623145 is a wasteful number, since it uses less digits than its factorization.

161255061623145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90338970129.

The product of its (nonzero) digits is 1296000, while the sum is 48.

The spelling of 161255061623145 in words is "one hundred sixty-one trillion, two hundred fifty-five billion, sixty-one million, six hundred twenty-three thousand, one hundred forty-five".