146635215145 has 4 divisors (see below), whose sum is σ = 175962258180. Its totient is φ = 117308172112.

The previous prime is 146635215091. The next prime is 146635215149. The reversal of 146635215145 is 541512536641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541512536641 = 877 ⋅617460133.

It can be written as a sum of positive squares in 2 ways, for example, as 33157860649 + 113477354496 = 182093^2 + 336864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146635215145 is a prime.

It is not an unprimeable number, because it can be changed into a prime (146635215149) 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, 14663521510 + ... + 14663521519.

It is an arithmetic number, because the mean of its divisors is an integer number (43990564545).

Almost surely, 2^146635215145 is an apocalyptic number.

It is an amenable number.

146635215145 is a deficient number, since it is larger than the sum of its proper divisors (29327043035).

146635215145 is an equidigital number, since it uses as much as digits as its factorization.

146635215145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29327043034.

The product of its digits is 432000, while the sum is 43.

The spelling of 146635215145 in words is "one hundred forty-six billion, six hundred thirty-five million, two hundred fifteen thousand, one hundred forty-five".