145544447545 has 32 divisors (see below), whose sum is σ = 199983522816. Its totient is φ = 99612288000.

The previous prime is 145544447491. The next prime is 145544447599. The reversal of 145544447545 is 545744445541.

It is an interprime number because it is at equal distance from previous prime (145544447491) and next prime (145544447599).

It is not a de Polignac number, because 145544447545 - 2²⁷ = 145410229817 is a prime.

It is a super-2 number, since 2×145544447545² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 145544447492 and 145544447501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76561095 + ... + 76562995.

It is an arithmetic number, because the mean of its divisors is an integer number (6249485088).

Almost surely, 2^145544447545 is an apocalyptic number.

It is an amenable number.

145544447545 is a deficient number, since it is larger than the sum of its proper divisors (54439075271).

145544447545 is a wasteful number, since it uses less digits than its factorization.

145544447545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921.

The product of its digits is 17920000, while the sum is 52.

The spelling of 145544447545 in words is "one hundred forty-five billion, five hundred forty-four million, four hundred forty-seven thousand, five hundred forty-five".