145445511543020 has 48 divisors (see below), whose sum is σ = 348279478329888. Its totient is φ = 50543960570880.

The previous prime is 145445511543019. The next prime is 145445511543119. The reversal of 145445511543020 is 20345115544541.

It is a super-2 number, since 2×145445511543020² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16453107746 + ... + 16453116585.

It is an arithmetic number, because the mean of its divisors is an integer number (7255822465206).

Almost surely, 2^{145445511543020} is an apocalyptic number.

145445511543020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145445511543020 is an abundant number, since it is smaller than the sum of its proper divisors (202833966786868).

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

145445511543020 is a wasteful number, since it uses less digits than its factorization.

145445511543020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32906224370 (or 32906224368 counting only the distinct ones).

The product of its (nonzero) digits is 960000, while the sum is 44.

The spelling of 145445511543020 in words is "one hundred forty-five trillion, four hundred forty-five billion, five hundred eleven million, five hundred forty-three thousand, twenty".