145515454423354 has 4 divisors (see below), whose sum is σ = 218273181635034. Its totient is φ = 72757727211676.

The previous prime is 145515454423321. The next prime is 145515454423357. The reversal of 145515454423354 is 453324454515541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 98196505642225 + 47318948781129 = 9909415^2 + 6878877^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145515454423295 and 145515454423304.

It is not an unprimeable number, because it can be changed into a prime (145515454423357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36378863605837 + ... + 36378863605840.

Almost surely, 2^{145515454423354} is an apocalyptic number.

145515454423354 is a deficient number, since it is larger than the sum of its proper divisors (72757727211680).

145515454423354 is an equidigital number, since it uses as much as digits as its factorization.

145515454423354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72757727211679.

The product of its digits is 57600000, while the sum is 55.

The spelling of 145515454423354 in words is "one hundred forty-five trillion, five hundred fifteen billion, four hundred fifty-four million, four hundred twenty-three thousand, three hundred fifty-four".