145541445444 has 72 divisors (see below), whose sum is σ = 387312511040. Its totient is φ = 45954153792.

The previous prime is 145541445431. The next prime is 145541445503. The reversal of 145541445444 is 444544145541.

145541445444 is a `hidden beast` number, since 1 + 4 + 554 + 1 + 4 + 4 + 54 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 145541445444.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9768969 + ... + 9783855.

Almost surely, 2^145541445444 is an apocalyptic number.

It is an amenable number.

145541445444 is an abundant number, since it is smaller than the sum of its proper divisors (241771065596).

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

145541445444 is a wasteful number, since it uses less digits than its factorization.

145541445444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29209 (or 29204 counting only the distinct ones).

The product of its digits is 2048000, while the sum is 45.

The spelling of 145541445444 in words is "one hundred forty-five billion, five hundred forty-one million, four hundred forty-five thousand, four hundred forty-four".