145945618901 has 2 divisors, whose sum is σ = 145945618902. Its totient is φ = 145945618900.

The previous prime is 145945618883. The next prime is 145945618909. The reversal of 145945618901 is 109816549541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117494700625 + 28450918276 = 342775^2 + 168674^2 .

It is a cyclic number.

It is not a de Polignac number, because 145945618901 - 2²² = 145941424597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145945618909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72972809450 + 72972809451.

It is an arithmetic number, because the mean of its divisors is an integer number (72972809451).

Almost surely, 2^145945618901 is an apocalyptic number.

It is an amenable number.

145945618901 is a deficient number, since it is larger than the sum of its proper divisors (1).

145945618901 is an equidigital number, since it uses as much as digits as its factorization.

145945618901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1555200, while the sum is 53.

The spelling of 145945618901 in words is "one hundred forty-five billion, nine hundred forty-five million, six hundred eighteen thousand, nine hundred one".