155412215543 has 8 divisors (see below), whose sum is σ = 167373637200. Its totient is φ = 143451741888.

The previous prime is 155412215489. The next prime is 155412215549. The reversal of 155412215543 is 345512214551.

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

It is not a de Polignac number, because 155412215543 - 2²² = 155408021239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155412215497 and 155412215506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155412215549) 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, 123848 + ... + 571106.

It is an arithmetic number, because the mean of its divisors is an integer number (20921704650).

Almost surely, 2^155412215543 is an apocalyptic number.

155412215543 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155412215543 is a deficient number, since it is larger than the sum of its proper divisors (11961421657).

155412215543 is a wasteful number, since it uses less digits than its factorization.

155412215543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474001.

The product of its digits is 120000, while the sum is 38.

The spelling of 155412215543 in words is "one hundred fifty-five billion, four hundred twelve million, two hundred fifteen thousand, five hundred forty-three".