145330393939 has 2 divisors, whose sum is σ = 145330393940. Its totient is φ = 145330393938.

The previous prime is 145330393937. The next prime is 145330393973. The reversal of 145330393939 is 939393033541.

It is a weak prime.

It is an emirp because it is prime and its reverse (939393033541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145330393939 - 2¹ = 145330393937 is a prime.

It is a super-2 number, since 2×145330393939² (a number of 23 digits) contains 22 as substring.

Together with 145330393937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145330393937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72665196969 + 72665196970.

It is an arithmetic number, because the mean of its divisors is an integer number (72665196970).

Almost surely, 2^145330393939 is an apocalyptic number.

145330393939 is a deficient number, since it is larger than the sum of its proper divisors (1).

145330393939 is an equidigital number, since it uses as much as digits as its factorization.

145330393939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3542940, while the sum is 52.

The spelling of 145330393939 in words is "one hundred forty-five billion, three hundred thirty million, three hundred ninety-three thousand, nine hundred thirty-nine".