145012246549 has 2 divisors, whose sum is σ = 145012246550. Its totient is φ = 145012246548.

The previous prime is 145012246543. The next prime is 145012246637. The reversal of 145012246549 is 945642210541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143181262449 + 1830984100 = 378393^2 + 42790^2 .

It is a cyclic number.

It is not a de Polignac number, because 145012246549 - 2³ = 145012246541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145012246541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72506123274 + 72506123275.

It is an arithmetic number, because the mean of its divisors is an integer number (72506123275).

Almost surely, 2^145012246549 is an apocalyptic number.

It is an amenable number.

145012246549 is a deficient number, since it is larger than the sum of its proper divisors (1).

145012246549 is an equidigital number, since it uses as much as digits as its factorization.

145012246549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 145012246549 in words is "one hundred forty-five billion, twelve million, two hundred forty-six thousand, five hundred forty-nine".