145544447546 has 8 divisors (see below), whose sum is σ = 219623957280. Its totient is φ = 72336461788.

The previous prime is 145544447491. The next prime is 145544447599. The reversal of 145544447546 is 645744445541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145544447546² (a number of 23 digits) contains 22 as substring.

It is a Curzon 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, 217880576 + ... + 217881243.

It is an arithmetic number, because the mean of its divisors is an integer number (27452994660).

Almost surely, 2^145544447546 is an apocalyptic number.

145544447546 is a deficient number, since it is larger than the sum of its proper divisors (74079509734).

145544447546 is a wasteful number, since it uses less digits than its factorization.

145544447546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435761988.

The product of its digits is 21504000, while the sum is 53.

The spelling of 145544447546 in words is "one hundred forty-five billion, five hundred forty-four million, four hundred forty-seven thousand, five hundred forty-six".