145243552213531 has 2 divisors, whose sum is σ = 145243552213532. Its totient is φ = 145243552213530.

The previous prime is 145243552213471. The next prime is 145243552213553. The reversal of 145243552213531 is 135312255342541.

It is a strong prime.

It is an emirp because it is prime and its reverse (135312255342541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145243552213531 - 2¹⁵ = 145243552180763 is a prime.

It is a super-2 number, since 2×145243552213531² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145243552213561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72621776106765 + 72621776106766.

It is an arithmetic number, because the mean of its divisors is an integer number (72621776106766).

Almost surely, 2^{145243552213531} is an apocalyptic number.

145243552213531 is a deficient number, since it is larger than the sum of its proper divisors (1).

145243552213531 is an equidigital number, since it uses as much as digits as its factorization.

145243552213531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160000, while the sum is 46.

The spelling of 145243552213531 in words is "one hundred forty-five trillion, two hundred forty-three billion, five hundred fifty-two million, two hundred thirteen thousand, five hundred thirty-one".