145431111421553 has 8 divisors (see below), whose sum is σ = 153085996735200. Its totient is φ = 137776287737088.

The previous prime is 145431111421537. The next prime is 145431111421571. The reversal of 145431111421553 is 355124111134541.

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 145431111421553 - 2⁴ = 145431111421537 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145431111421553.

It is not an unprimeable number, because it can be changed into a prime (145431111424553) 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, 10523843 + ... + 20040296.

It is an arithmetic number, because the mean of its divisors is an integer number (19135749591900).

Almost surely, 2^{145431111421553} is an apocalyptic number.

It is an amenable number.

145431111421553 is a deficient number, since it is larger than the sum of its proper divisors (7654885313647).

145431111421553 is a wasteful number, since it uses less digits than its factorization.

145431111421553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30814591.

The product of its digits is 144000, while the sum is 41.

The spelling of 145431111421553 in words is "one hundred forty-five trillion, four hundred thirty-one billion, one hundred eleven million, four hundred twenty-one thousand, five hundred fifty-three".