145546531644 has 12 divisors (see below), whose sum is σ = 339608573864. Its totient is φ = 48515510544.

The previous prime is 145546531619. The next prime is 145546531717. The reversal of 145546531644 is 446135645541.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 145546531593 and 145546531602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6064438807 + ... + 6064438830.

Almost surely, 2^145546531644 is an apocalyptic number.

It is an amenable number.

145546531644 is an abundant number, since it is smaller than the sum of its proper divisors (194062042220).

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

145546531644 is a wasteful number, since it uses less digits than its factorization.

145546531644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12128877644 (or 12128877642 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 48.

The spelling of 145546531644 in words is "one hundred forty-five billion, five hundred forty-six million, five hundred thirty-one thousand, six hundred forty-four".