145515820754774 has 8 divisors (see below), whose sum is σ = 229761822244440. Its totient is φ = 68928546673296.

The previous prime is 145515820754761. The next prime is 145515820754779. The reversal of 145515820754774 is 477457028515541.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 145515820754774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145515820754779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914681851999 + ... + 1914681852074.

It is an arithmetic number, because the mean of its divisors is an integer number (28720227780555).

Almost surely, 2^{145515820754774} is an apocalyptic number.

145515820754774 is a deficient number, since it is larger than the sum of its proper divisors (84246001489666).

145515820754774 is a wasteful number, since it uses less digits than its factorization.

145515820754774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829363704094.

The product of its (nonzero) digits is 219520000, while the sum is 65.

The spelling of 145515820754774 in words is "one hundred forty-five trillion, five hundred fifteen billion, eight hundred twenty million, seven hundred fifty-four thousand, seven hundred seventy-four".