145120440023515 has 8 divisors (see below), whose sum is σ = 189975848758128. Its totient is φ = 105542138198880.

The previous prime is 145120440023513. The next prime is 145120440023519. The reversal of 145120440023515 is 515320044021541.

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

It is not a de Polignac number, because 145120440023515 - 2¹ = 145120440023513 is a prime.

It is a super-2 number, since 2×145120440023515² (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 (145120440023513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319276727432 + ... + 1319276727541.

It is an arithmetic number, because the mean of its divisors is an integer number (23746981094766).

Almost surely, 2^{145120440023515} is an apocalyptic number.

145120440023515 is a deficient number, since it is larger than the sum of its proper divisors (44855408734613).

145120440023515 is a wasteful number, since it uses less digits than its factorization.

145120440023515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2638553454989.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 145120440023515 in words is "one hundred forty-five trillion, one hundred twenty billion, four hundred forty million, twenty-three thousand, five hundred fifteen".