145814631505 has 8 divisors (see below), whose sum is σ = 185270355432. Its totient is φ = 109789840128.

The previous prime is 145814631493. The next prime is 145814631511. The reversal of 145814631505 is 505136418541.

It is a happy number.

145814631505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 79539792784 + 66274838721 = 282028^2 + 257439^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145814631505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857733042 + ... + 857733211.

It is an arithmetic number, because the mean of its divisors is an integer number (23158794429).

Almost surely, 2^145814631505 is an apocalyptic number.

It is an amenable number.

145814631505 is a deficient number, since it is larger than the sum of its proper divisors (39455723927).

145814631505 is a wasteful number, since it uses less digits than its factorization.

145814631505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715466275.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 145814631505 in words is "one hundred forty-five billion, eight hundred fourteen million, six hundred thirty-one thousand, five hundred five".