145442222523 has 108 divisors (see below), whose sum is σ = 246613039920. Its totient is φ = 82489021056.

The previous prime is 145442222491. The next prime is 145442222573. The reversal of 145442222523 is 325222244541.

145442222523 is a `hidden beast` number, since 1 + 4 + 5 + 4 + 422 + 225 + 2 + 3 = 666.

It is not a de Polignac number, because 145442222523 - 2⁵ = 145442222491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145442222573) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 20312418 + ... + 20319576.

Almost surely, 2^145442222523 is an apocalyptic number.

145442222523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145442222523 is a deficient number, since it is larger than the sum of its proper divisors (101170817397).

145442222523 is a wasteful number, since it uses less digits than its factorization.

145442222523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7266 (or 7231 counting only the distinct ones).

The product of its digits is 153600, while the sum is 36.

The spelling of 145442222523 in words is "one hundred forty-five billion, four hundred forty-two million, two hundred twenty-two thousand, five hundred twenty-three".