145518341621 has 8 divisors (see below), whose sum is σ = 151068154080. Its totient is φ = 140003991792.

The previous prime is 145518341603. The next prime is 145518341623. The reversal of 145518341621 is 126143815541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145518341621 - 2⁶ = 145518341557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145518341623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8857295 + ... + 8873708.

It is an arithmetic number, because the mean of its divisors is an integer number (18883519260).

Almost surely, 2^145518341621 is an apocalyptic number.

It is an amenable number.

145518341621 is a deficient number, since it is larger than the sum of its proper divisors (5549812459).

145518341621 is a wasteful number, since it uses less digits than its factorization.

145518341621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17731315.

The product of its digits is 115200, while the sum is 41.

The spelling of 145518341621 in words is "one hundred forty-five billion, five hundred eighteen million, three hundred forty-one thousand, six hundred twenty-one".