145215541123 has 4 divisors (see below), whose sum is σ = 152858464360. Its totient is φ = 137572617888.

The previous prime is 145215541109. The next prime is 145215541127. The reversal of 145215541123 is 321145512541.

145215541123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145215541123 is a prime.

It is a super-2 number, since 2×145215541123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145215541127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3821461590 + ... + 3821461627.

It is an arithmetic number, because the mean of its divisors is an integer number (38214616090).

Almost surely, 2^145215541123 is an apocalyptic number.

145215541123 is a deficient number, since it is larger than the sum of its proper divisors (7642923237).

145215541123 is an equidigital number, since it uses as much as digits as its factorization.

145215541123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642923236.

The product of its digits is 24000, while the sum is 34.

The spelling of 145215541123 in words is "one hundred forty-five billion, two hundred fifteen million, five hundred forty-one thousand, one hundred twenty-three".