145217393476 has 9 divisors (see below), whose sum is σ = 254131772349. Its totient is φ = 72608315664.

The previous prime is 145217393449. The next prime is 145217393479. The reversal of 145217393476 is 674393712541.

The square root of 145217393476 is 381074.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 143876076100 + 1341317376 = 379310^2 + 36624^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145217393479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 666880 + ... + 857416.

Almost surely, 2^145217393476 is an apocalyptic number.

145217393476 is the 381074-th square number.

It is an amenable number.

145217393476 is a deficient number, since it is larger than the sum of its proper divisors (108914378873).

145217393476 is an frugal number, since it uses more digits than its factorization.

145217393476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381078 (or 190539 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 52.

The spelling of 145217393476 in words is "one hundred forty-five billion, two hundred seventeen million, three hundred ninety-three thousand, four hundred seventy-six".