145013035201621 has 2 divisors, whose sum is σ = 145013035201622. Its totient is φ = 145013035201620.

The previous prime is 145013035201499. The next prime is 145013035201631. The reversal of 145013035201621 is 126102530310541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145010703277521 + 2331924100 = 12042039^2 + 48290^2 .

It is an emirp because it is prime and its reverse (126102530310541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145013035201621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145013035201631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72506517600810 + 72506517600811.

It is an arithmetic number, because the mean of its divisors is an integer number (72506517600811).

Almost surely, 2^{145013035201621} is an apocalyptic number.

It is an amenable number.

145013035201621 is a deficient number, since it is larger than the sum of its proper divisors (1).

145013035201621 is an equidigital number, since it uses as much as digits as its factorization.

145013035201621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 145013035201621 in words is "one hundred forty-five trillion, thirteen billion, thirty-five million, two hundred one thousand, six hundred twenty-one".