145344645652 has 24 divisors (see below), whose sum is σ = 255798393032. Its totient is φ = 72259516800.

The previous prime is 145344645631. The next prime is 145344645659. The reversal of 145344645652 is 256546443541.

It can be written as a sum of positive squares in 4 ways, for example, as 1259114256 + 144085531396 = 35484^2 + 379586^2 .

It is a super-2 number, since 2×145344645652² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145344645596 and 145344645605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145344645659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6462058 + ... + 6484510.

Almost surely, 2^145344645652 is an apocalyptic number.

It is an amenable number.

145344645652 is a deficient number, since it is larger than the sum of its proper divisors (110453747380).

145344645652 is a wasteful number, since it uses less digits than its factorization.

145344645652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31579 (or 31577 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 49.

The spelling of 145344645652 in words is "one hundred forty-five billion, three hundred forty-four million, six hundred forty-five thousand, six hundred fifty-two".