145420450531213 has 16 divisors (see below), whose sum is σ = 173183929603776. Its totient is φ = 120359487738240.

The previous prime is 145420450531087. The next prime is 145420450531313. The reversal of 145420450531213 is 312135054024541.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145420450531213 is a prime.

It is a super-2 number, since 2×145420450531213² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145420450531313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6965237695 + ... + 6965258572.

It is an arithmetic number, because the mean of its divisors is an integer number (10823995600236).

Almost surely, 2^{145420450531213} is an apocalyptic number.

145420450531213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

145420450531213 is a deficient number, since it is larger than the sum of its proper divisors (27763479072563).

145420450531213 is a wasteful number, since it uses less digits than its factorization.

145420450531213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13930496364.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 145420450531213 in words is "one hundred forty-five trillion, four hundred twenty billion, four hundred fifty million, five hundred thirty-one thousand, two hundred thirteen".