145431052121345 has 8 divisors (see below), whose sum is σ = 174518303912064. Its totient is φ = 116344147452784.

The previous prime is 145431052121281. The next prime is 145431052121347. The reversal of 145431052121345 is 543121250134541.

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 145431052121345 - 2⁶ = 145431052121281 is a prime.

It is a super-2 number, since 2×145431052121345² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145431052121347) 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 7 ways as a sum of consecutive naturals, for example, 85857929 + ... + 87535398.

It is an arithmetic number, because the mean of its divisors is an integer number (21814787989008).

Almost surely, 2^{145431052121345} is an apocalyptic number.

It is an amenable number.

145431052121345 is a deficient number, since it is larger than the sum of its proper divisors (29087251790719).

145431052121345 is a wasteful number, since it uses less digits than its factorization.

145431052121345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173561079.

The product of its (nonzero) digits is 288000, while the sum is 41.

The spelling of 145431052121345 in words is "one hundred forty-five trillion, four hundred thirty-one billion, fifty-two million, one hundred twenty-one thousand, three hundred forty-five".