145922065538 has 18 divisors (see below), whose sum is σ = 232530590331. Its totient is φ = 68664885504.

The previous prime is 145922065463. The next prime is 145922065573. The reversal of 145922065538 is 835560229541.

It can be written as a sum of positive squares in 5 ways, for example, as 72563968129 + 73358097409 = 269377^2 + 270847^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=270113.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9175898 + ... + 9191786.

Almost surely, 2^145922065538 is an apocalyptic number.

145922065538 is a deficient number, since it is larger than the sum of its proper divisors (86608524793).

145922065538 is an frugal number, since it uses more digits than its factorization.

145922065538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31814 (or 15908 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 50.

Multiplying 145922065538 by its sum of digits (50), we get a square (7296103276900 = 2701130²).

The spelling of 145922065538 in words is "one hundred forty-five billion, nine hundred twenty-two million, sixty-five thousand, five hundred thirty-eight".