145020522973 has 2 divisors, whose sum is σ = 145020522974. Its totient is φ = 145020522972.

The previous prime is 145020522947. The next prime is 145020523117. The reversal of 145020522973 is 379225020541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89651138724 + 55369384249 = 299418^2 + 235307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145020522973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145020522373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72510261486 + 72510261487.

It is an arithmetic number, because the mean of its divisors is an integer number (72510261487).

Almost surely, 2^145020522973 is an apocalyptic number.

It is an amenable number.

145020522973 is a deficient number, since it is larger than the sum of its proper divisors (1).

145020522973 is an equidigital number, since it uses as much as digits as its factorization.

145020522973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 145020522973 in words is "one hundred forty-five billion, twenty million, five hundred twenty-two thousand, nine hundred seventy-three".