145394265636 has 81 divisors (see below), whose sum is σ = 371729712081. Its totient is φ = 47916437184.

The previous prime is 145394265619. The next prime is 145394265647. The reversal of 145394265636 is 636562493541.

The square root of 145394265636 is 381306.

It is a perfect power (a square), and thus also a powerful number.

145394265636 is a `hidden beast` number, since 1 + 4 + 5 + 39 + 42 + 6 + 563 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4210712100 + 141183553536 = 64890^2 + 375744^2 .

It is a super-2 number, since 2×145394265636² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 235646800 + ... + 235647416.

Almost surely, 2^145394265636 is an apocalyptic number.

145394265636 is the 381306-th square number.

It is an amenable number.

145394265636 is an abundant number, since it is smaller than the sum of its proper divisors (226335446445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145394265636 is an equidigital number, since it uses as much as digits as its factorization.

145394265636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 725 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 54.

The spelling of 145394265636 in words is "one hundred forty-five billion, three hundred ninety-four million, two hundred sixty-five thousand, six hundred thirty-six".