145004431769 has 8 divisors (see below), whose sum is σ = 153580367520. Its totient is φ = 136433636416.

The previous prime is 145004431723. The next prime is 145004431787. The reversal of 145004431769 is 967134400541.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145004431769 is a prime.

It is a super-2 number, since 2×145004431769² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145004436769) 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, 1226939 + ... + 1339920.

It is an arithmetic number, because the mean of its divisors is an integer number (19197545940).

Almost surely, 2^145004431769 is an apocalyptic number.

It is an amenable number.

145004431769 is a deficient number, since it is larger than the sum of its proper divisors (8575935751).

145004431769 is a wasteful number, since it uses less digits than its factorization.

145004431769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2570199.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 145004431769 in words is "one hundred forty-five billion, four million, four hundred thirty-one thousand, seven hundred sixty-nine".