145365642231 has 4 divisors (see below), whose sum is σ = 193820856312. Its totient is φ = 96910428152.

The previous prime is 145365642203. The next prime is 145365642241. The reversal of 145365642231 is 132246563541.

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

It is a cyclic number.

It is not a de Polignac number, because 145365642231 - 2⁶ = 145365642167 is a prime.

It is a super-2 number, since 2×145365642231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145365642241) 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, 24227607036 + ... + 24227607041.

It is an arithmetic number, because the mean of its divisors is an integer number (48455214078).

Almost surely, 2^145365642231 is an apocalyptic number.

145365642231 is a deficient number, since it is larger than the sum of its proper divisors (48455214081).

145365642231 is an equidigital number, since it uses as much as digits as its factorization.

145365642231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48455214080.

The product of its digits is 518400, while the sum is 42.

The spelling of 145365642231 in words is "one hundred forty-five billion, three hundred sixty-five million, six hundred forty-two thousand, two hundred thirty-one".