155448448623 has 64 divisors (see below), whose sum is σ = 259077934080. Its totient is φ = 91400310144.

The previous prime is 155448448607. The next prime is 155448448627. The reversal of 155448448623 is 326844844551.

155448448623 is a `hidden beast` number, since 1 + 5 + 5 + 4 + 4 + 8 + 4 + 4 + 8 + 623 = 666.

155448448623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 155448448623 - 2⁴ = 155448448607 is a prime.

It is a super-2 number, since 2×155448448623² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155448448623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155448448627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7634965 + ... + 7655297.

It is an arithmetic number, because the mean of its divisors is an integer number (4048092720).

Almost surely, 2^155448448623 is an apocalyptic number.

155448448623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

155448448623 is a deficient number, since it is larger than the sum of its proper divisors (103629485457).

155448448623 is a wasteful number, since it uses less digits than its factorization.

155448448623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21325 (or 21319 counting only the distinct ones).

The product of its digits is 14745600, while the sum is 54.

The spelling of 155448448623 in words is "one hundred fifty-five billion, four hundred forty-eight million, four hundred forty-eight thousand, six hundred twenty-three".