145355621136 has 80 divisors (see below), whose sum is σ = 409708687680. Its totient is φ = 44039618560.

The previous prime is 145355621129. The next prime is 145355621141. The reversal of 145355621136 is 631126553541.

It is a happy number.

145355621136 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×145355621136³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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, 3587680 + ... + 3627968.

It is an arithmetic number, because the mean of its divisors is an integer number (5121358596).

Almost surely, 2^145355621136 is an apocalyptic number.

145355621136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

145355621136 is an abundant number, since it is smaller than the sum of its proper divisors (264353066544).

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

145355621136 is a wasteful number, since it uses less digits than its factorization.

145355621136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47144 (or 47138 counting only the distinct ones).

The product of its digits is 324000, while the sum is 42.

The spelling of 145355621136 in words is "one hundred forty-five billion, three hundred fifty-five million, six hundred twenty-one thousand, one hundred thirty-six".