145230135553 has 4 divisors (see below), whose sum is σ = 145743316528. Its totient is φ = 144716954580.

The previous prime is 145230135469. The next prime is 145230135587. The reversal of 145230135553 is 355531032541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355531032541 = 73 ⋅4870288117.

It is a cyclic number.

It is not a de Polignac number, because 145230135553 - 2⁹ = 145230135041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145230130553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256590063 + ... + 256590628.

It is an arithmetic number, because the mean of its divisors is an integer number (36435829132).

Almost surely, 2^145230135553 is an apocalyptic number.

It is an amenable number.

145230135553 is a deficient number, since it is larger than the sum of its proper divisors (513180975).

145230135553 is an equidigital number, since it uses as much as digits as its factorization.

145230135553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513180974.

The product of its (nonzero) digits is 135000, while the sum is 37.

The spelling of 145230135553 in words is "one hundred forty-five billion, two hundred thirty million, one hundred thirty-five thousand, five hundred fifty-three".