155404105543 has 8 divisors (see below), whose sum is σ = 164114552448. Its totient is φ = 146856470904.

The previous prime is 155404105501. The next prime is 155404105573. The reversal of 155404105543 is 345501404551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155404105543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155404105573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40701105 + ... + 40704922.

It is an arithmetic number, because the mean of its divisors is an integer number (20514319056).

Almost surely, 2^155404105543 is an apocalyptic number.

155404105543 is a deficient number, since it is larger than the sum of its proper divisors (8710446905).

155404105543 is an equidigital number, since it uses as much as digits as its factorization.

155404105543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81406133.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 155404105543 in words is "one hundred fifty-five billion, four hundred four million, one hundred five thousand, five hundred forty-three".