155543143040 has 64 divisors (see below), whose sum is σ = 374308110720. Its totient is φ = 61805184000.

The previous prime is 155543143039. The next prime is 155543143057. The reversal of 155543143040 is 40341345551.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708116 + ... + 901395.

It is an arithmetic number, because the mean of its divisors is an integer number (5848564230).

Almost surely, 2^155543143040 is an apocalyptic number.

155543143040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155543143040 is an abundant number, since it is smaller than the sum of its proper divisors (218764967680).

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

155543143040 is a wasteful number, since it uses less digits than its factorization.

155543143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609681 (or 1609669 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 155543143040 its reverse (40341345551), we get a palindrome (195884488591).

The spelling of 155543143040 in words is "one hundred fifty-five billion, five hundred forty-three million, one hundred forty-three thousand, forty".