145230621055 has 32 divisors (see below), whose sum is σ = 192011057280. Its totient is φ = 104800604160.

The previous prime is 145230621031. The next prime is 145230621083. The reversal of 145230621055 is 550126032541.

It is not a de Polignac number, because 145230621055 - 2⁵ = 145230621023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145230621055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 382251 + ... + 660739.

It is an arithmetic number, because the mean of its divisors is an integer number (6000345540).

Almost surely, 2^145230621055 is an apocalyptic number.

145230621055 is a deficient number, since it is larger than the sum of its proper divisors (46780436225).

145230621055 is a wasteful number, since it uses less digits than its factorization.

145230621055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278691.

The product of its (nonzero) digits is 36000, while the sum is 34.

Adding to 145230621055 its reverse (550126032541), we get a palindrome (695356653596).

The spelling of 145230621055 in words is "one hundred forty-five billion, two hundred thirty million, six hundred twenty-one thousand, fifty-five".