145305001987 has 2 divisors, whose sum is σ = 145305001988. Its totient is φ = 145305001986.

The previous prime is 145305001973. The next prime is 145305002023. The reversal of 145305001987 is 789100503541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145305001987 - 2¹⁵ = 145304969219 is a prime.

It is a super-2 number, since 2×145305001987² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145305005987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72652500993 + 72652500994.

It is an arithmetic number, because the mean of its divisors is an integer number (72652500994).

Almost surely, 2^145305001987 is an apocalyptic number.

145305001987 is a deficient number, since it is larger than the sum of its proper divisors (1).

145305001987 is an equidigital number, since it uses as much as digits as its factorization.

145305001987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 145305001987 in words is "one hundred forty-five billion, three hundred five million, one thousand, nine hundred eighty-seven".