145542431633 has 4 divisors (see below), whose sum is σ = 147714706800. Its totient is φ = 143370156468.

The previous prime is 145542431623. The next prime is 145542431641. The reversal of 145542431633 is 336134245541.

It is a happy number.

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 145542431633 - 2⁶ = 145542431569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145542431623) 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, 1086137483 + ... + 1086137616.

It is an arithmetic number, because the mean of its divisors is an integer number (36928676700).

Almost surely, 2^145542431633 is an apocalyptic number.

It is an amenable number.

145542431633 is a deficient number, since it is larger than the sum of its proper divisors (2172275167).

145542431633 is an equidigital number, since it uses as much as digits as its factorization.

145542431633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172275166.

The product of its digits is 518400, while the sum is 41.

The spelling of 145542431633 in words is "one hundred forty-five billion, five hundred forty-two million, four hundred thirty-one thousand, six hundred thirty-three".