145344455646 has 32 divisors (see below), whose sum is σ = 313756329600. Its totient is φ = 44620409184.

The previous prime is 145344455623. The next prime is 145344455681. The reversal of 145344455646 is 646554443541.

145344455646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145344455646² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2068596 + ... + 2137703.

It is an arithmetic number, because the mean of its divisors is an integer number (9804885300).

Almost surely, 2^145344455646 is an apocalyptic number.

145344455646 is an abundant number, since it is smaller than the sum of its proper divisors (168411873954).

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

145344455646 is a wasteful number, since it uses less digits than its factorization.

145344455646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4206760.

The product of its digits is 13824000, while the sum is 51.

The spelling of 145344455646 in words is "one hundred forty-five billion, three hundred forty-four million, four hundred fifty-five thousand, six hundred forty-six".