145004431801 has 4 divisors (see below), whose sum is σ = 146751473232. Its totient is φ = 143257390372.

The previous prime is 145004431787. The next prime is 145004431841. The reversal of 145004431801 is 108134400541.

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.

It is a cyclic number.

It is not a de Polignac number, because 145004431801 - 2¹¹ = 145004429753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145004431841) 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, 873520591 + ... + 873520756.

It is an arithmetic number, because the mean of its divisors is an integer number (36687868308).

Almost surely, 2^145004431801 is an apocalyptic number.

It is an amenable number.

145004431801 is a deficient number, since it is larger than the sum of its proper divisors (1747041431).

145004431801 is an equidigital number, since it uses as much as digits as its factorization.

145004431801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747041430.

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 145004431801 in words is "one hundred forty-five billion, four million, four hundred thirty-one thousand, eight hundred one".