145619236447 has 4 divisors (see below), whose sum is σ = 146765844736. Its totient is φ = 144472628160.

The previous prime is 145619236423. The next prime is 145619236481. The reversal of 145619236447 is 744632916541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744632916541 = 929 ⋅801542429.

It is a cyclic number.

It is not a de Polignac number, because 145619236447 - 2¹⁹ = 145618712159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145619236394 and 145619236403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145619236247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 573303954 + ... + 573304207.

It is an arithmetic number, because the mean of its divisors is an integer number (36691461184).

Almost surely, 2^145619236447 is an apocalyptic number.

145619236447 is a deficient number, since it is larger than the sum of its proper divisors (1146608289).

145619236447 is a wasteful number, since it uses less digits than its factorization.

145619236447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146608288.

The product of its digits is 4354560, while the sum is 52.

The spelling of 145619236447 in words is "one hundred forty-five billion, six hundred nineteen million, two hundred thirty-six thousand, four hundred forty-seven".