145744331886 has 64 divisors (see below), whose sum is σ = 338598259200. Its totient is φ = 46468997784.

The previous prime is 145744331879. The next prime is 145744331897. The reversal of 145744331886 is 688133447541.

145744331886 is a `hidden beast` number, since 1 + 457 + 4 + 4 + 3 + 3 + 188 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 546105 + ... + 767931.

It is an arithmetic number, because the mean of its divisors is an integer number (5290597800).

Almost surely, 2^145744331886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145744331886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169299129600).

145744331886 is an abundant number, since it is smaller than the sum of its proper divisors (192853927314).

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

145744331886 is an equidigital number, since it uses as much as digits as its factorization.

145744331886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221907 (or 221855 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 145744331886 in words is "one hundred forty-five billion, seven hundred forty-four million, three hundred thirty-one thousand, eight hundred eighty-six".