145553975472 has 90 divisors (see below), whose sum is σ = 383612121732. Its totient is φ = 47556742272.

The previous prime is 145553975471. The next prime is 145553975477. The reversal of 145553975472 is 274579355541.

It is not an unprimeable number, because it can be changed into a prime (145553975471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 140089929 + ... + 140090967.

Almost surely, 2^145553975472 is an apocalyptic number.

145553975472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145553975472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191806060866).

145553975472 is an abundant number, since it is smaller than the sum of its proper divisors (238058146260).

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

145553975472 is an frugal number, since it uses more digits than its factorization.

145553975472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 1097 counting only the distinct ones).

The product of its digits is 26460000, while the sum is 57.

The spelling of 145553975472 in words is "one hundred forty-five billion, five hundred fifty-three million, nine hundred seventy-five thousand, four hundred seventy-two".