145545531645 has 16 divisors (see below), whose sum is σ = 233111229120. Its totient is φ = 77544824064.

The previous prime is 145545531631. The next prime is 145545531653. The reversal of 145545531645 is 546135545541.

It is not a de Polignac number, because 145545531645 - 2⁵ = 145545531613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145545531594 and 145545531603.

It is a congruent number.

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, 4951075 + ... + 4980384.

It is an arithmetic number, because the mean of its divisors is an integer number (14569451820).

Almost surely, 2^145545531645 is an apocalyptic number.

145545531645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145545531645 is a deficient number, since it is larger than the sum of its proper divisors (87565697475).

145545531645 is an equidigital number, since it uses as much as digits as its factorization.

145545531645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932444.

The product of its digits is 3600000, while the sum is 48.

The spelling of 145545531645 in words is "one hundred forty-five billion, five hundred forty-five million, five hundred thirty-one thousand, six hundred forty-five".