1545727643020 has 72 divisors (see below), whose sum is σ = 3654971548704. Its totient is φ = 548373408000.

The previous prime is 1545727642997. The next prime is 1545727643029. The reversal of 1545727643020 is 203467275451.

It is not an unprimeable number, because it can be changed into a prime (1545727643029) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7690176 + ... + 7888615.

It is an arithmetic number, because the mean of its divisors is an integer number (50763493732).

Almost surely, 2^{1545727643020} is an apocalyptic number.

1545727643020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545727643020 is an abundant number, since it is smaller than the sum of its proper divisors (2109243905684).

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

1545727643020 is a wasteful number, since it uses less digits than its factorization.

1545727643020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578863 (or 15578850 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 1545727643020 in words is "one trillion, five hundred forty-five billion, seven hundred twenty-seven million, six hundred forty-three thousand, twenty".