145121603654 has 4 divisors (see below), whose sum is σ = 217682405484. Its totient is φ = 72560801826.

The previous prime is 145121603647. The next prime is 145121603687. The reversal of 145121603654 is 456306121541.

145121603654 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 is a congruent number.

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, 36280400912 + ... + 36280400915.

It is an arithmetic number, because the mean of its divisors is an integer number (54420601371).

Almost surely, 2^145121603654 is an apocalyptic number.

145121603654 is a deficient number, since it is larger than the sum of its proper divisors (72560801830).

145121603654 is an equidigital number, since it uses as much as digits as its factorization.

145121603654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72560801829.

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 145121603654 in words is "one hundred forty-five billion, one hundred twenty-one million, six hundred three thousand, six hundred fifty-four".