155543886336432 has 80 divisors (see below), whose sum is σ = 438433996999680. Its totient is φ = 47125581484800.

The previous prime is 155543886336409. The next prime is 155543886336451. The reversal of 155543886336432 is 234633688345551.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25114819 + ... + 30689442.

It is an arithmetic number, because the mean of its divisors is an integer number (5480424962496).

Almost surely, 2^{155543886336432} is an apocalyptic number.

155543886336432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155543886336432 is an abundant number, since it is smaller than the sum of its proper divisors (282890110663248).

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

155543886336432 is a wasteful number, since it uses less digits than its factorization.

155543886336432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55809562 (or 55809556 counting only the distinct ones).

The product of its digits is 746496000, while the sum is 66.

The spelling of 155543886336432 in words is "one hundred fifty-five trillion, five hundred forty-three billion, eight hundred eighty-six million, three hundred thirty-six thousand, four hundred thirty-two".