145605456554 has 4 divisors (see below), whose sum is σ = 218408184834. Its totient is φ = 72802728276.

The previous prime is 145605456511. The next prime is 145605456583. The reversal of 145605456554 is 455654506541.

145605456554 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 141500107225 + 4105349329 = 376165^2 + 64073^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36401364137 + ... + 36401364140.

Almost surely, 2^145605456554 is an apocalyptic number.

145605456554 is a deficient number, since it is larger than the sum of its proper divisors (72802728280).

145605456554 is an equidigital number, since it uses as much as digits as its factorization.

145605456554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72802728279.

The product of its (nonzero) digits is 7200000, while the sum is 50.

The spelling of 145605456554 in words is "one hundred forty-five billion, six hundred five million, four hundred fifty-six thousand, five hundred fifty-four".