145808886438 has 24 divisors (see below), whose sum is σ = 320246917848. Its totient is φ = 47937167712.

The previous prime is 145808886403. The next prime is 145808886449. The reversal of 145808886438 is 834688808541.

145808886438 is a `hidden beast` number, since 1 + 4 + 580 + 8 + 8 + 8 + 6 + 43 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55481520 + ... + 55484147.

It is an arithmetic number, because the mean of its divisors is an integer number (13343621577).

Almost surely, 2^145808886438 is an apocalyptic number.

145808886438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145808886438 is an abundant number, since it is smaller than the sum of its proper divisors (174438031410).

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

145808886438 is a wasteful number, since it uses less digits than its factorization.

145808886438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110965748 (or 110965745 counting only the distinct ones).

The product of its (nonzero) digits is 47185920, while the sum is 63.

The spelling of 145808886438 in words is "one hundred forty-five billion, eight hundred eight million, eight hundred eighty-six thousand, four hundred thirty-eight".