145306644653 has 2 divisors, whose sum is σ = 145306644654. Its totient is φ = 145306644652.

The previous prime is 145306644631. The next prime is 145306644673. The reversal of 145306644653 is 356446603541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93219081124 + 52087563529 = 305318^2 + 228227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145306644653 is a prime.

It is a super-2 number, since 2×145306644653² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145306644598 and 145306644607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145306644673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72653322326 + 72653322327.

It is an arithmetic number, because the mean of its divisors is an integer number (72653322327).

Almost surely, 2^145306644653 is an apocalyptic number.

It is an amenable number.

145306644653 is a deficient number, since it is larger than the sum of its proper divisors (1).

145306644653 is an equidigital number, since it uses as much as digits as its factorization.

145306644653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 145306644653 in words is "one hundred forty-five billion, three hundred six million, six hundred forty-four thousand, six hundred fifty-three".