145012400521 has 2 divisors, whose sum is σ = 145012400522. Its totient is φ = 145012400520.

The previous prime is 145012400513. The next prime is 145012400543. The reversal of 145012400521 is 125004210541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126710369296 + 18302031225 = 355964^2 + 135285^2 .

It is a cyclic number.

It is not a de Polignac number, because 145012400521 - 2³ = 145012400513 is a prime.

It is not a weakly prime, because it can be changed into another prime (145012400591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72506200260 + 72506200261.

It is an arithmetic number, because the mean of its divisors is an integer number (72506200261).

Almost surely, 2^145012400521 is an apocalyptic number.

It is an amenable number.

145012400521 is a deficient number, since it is larger than the sum of its proper divisors (1).

145012400521 is an equidigital number, since it uses as much as digits as its factorization.

145012400521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 145012400521 in words is "one hundred forty-five billion, twelve million, four hundred thousand, five hundred twenty-one".