1540543154020 has 48 divisors (see below), whose sum is σ = 3578159713968. Its totient is φ = 553442526720.

The previous prime is 1540543153991. The next prime is 1540543154063. The reversal of 1540543154020 is 204513450451.

It can be written as a sum of positive squares in 8 ways, for example, as 222657521956 + 1317885632064 = 471866^2 + 1147992^2 .

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, 80060191 + ... + 80079430.

It is an arithmetic number, because the mean of its divisors is an integer number (74544994041).

Almost surely, 2^{1540543154020} is an apocalyptic number.

1540543154020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1540543154020 is an abundant number, since it is smaller than the sum of its proper divisors (2037616559948).

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

1540543154020 is a wasteful number, since it uses less digits than its factorization.

1540543154020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160139680 (or 160139678 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The spelling of 1540543154020 in words is "one trillion, five hundred forty billion, five hundred forty-three million, one hundred fifty-four thousand, twenty".