145881205157188 has 48 divisors (see below), whose sum is σ = 256807732003200. Its totient is φ = 72508944880640.

The previous prime is 145881205157183. The next prime is 145881205157269. The reversal of 145881205157188 is 881751502188541.

It is a happy number.

It is a super-2 number, since 2×145881205157188² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145881205157183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 886566483 + ... + 886731013.

It is an arithmetic number, because the mean of its divisors is an integer number (5350161083400).

Almost surely, 2^{145881205157188} is an apocalyptic number.

It is an amenable number.

145881205157188 is a deficient number, since it is larger than the sum of its proper divisors (110926526846012).

145881205157188 is a wasteful number, since it uses less digits than its factorization.

145881205157188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166620 (or 166618 counting only the distinct ones).

The product of its (nonzero) digits is 28672000, while the sum is 64.

The spelling of 145881205157188 in words is "one hundred forty-five trillion, eight hundred eighty-one billion, two hundred five million, one hundred fifty-seven thousand, one hundred eighty-eight".