145420450531087 has 2 divisors, whose sum is σ = 145420450531088. Its totient is φ = 145420450531086.

The previous prime is 145420450531049. The next prime is 145420450531313. The reversal of 145420450531087 is 780135054024541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145420450531087 is a prime.

It is a super-2 number, since 2×145420450531087² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145420450531087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145420450531687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72710225265543 + 72710225265544.

It is an arithmetic number, because the mean of its divisors is an integer number (72710225265544).

Almost surely, 2^{145420450531087} is an apocalyptic number.

145420450531087 is a deficient number, since it is larger than the sum of its proper divisors (1).

145420450531087 is an equidigital number, since it uses as much as digits as its factorization.

145420450531087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688000, while the sum is 49.

The spelling of 145420450531087 in words is "one hundred forty-five trillion, four hundred twenty billion, four hundred fifty million, five hundred thirty-one thousand, eighty-seven".