145426345631 has 4 divisors (see below), whose sum is σ = 166201537872. Its totient is φ = 124651153392.

The previous prime is 145426345607. The next prime is 145426345637. The reversal of 145426345631 is 136543624541.

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 145426345631 - 2⁶ = 145426345567 is a prime.

It is a super-2 number, since 2×145426345631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145426345637) 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, 10387596110 + ... + 10387596123.

It is an arithmetic number, because the mean of its divisors is an integer number (41550384468).

Almost surely, 2^145426345631 is an apocalyptic number.

145426345631 is a deficient number, since it is larger than the sum of its proper divisors (20775192241).

145426345631 is an equidigital number, since it uses as much as digits as its factorization.

145426345631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20775192240.

The product of its digits is 1036800, while the sum is 44.

The spelling of 145426345631 in words is "one hundred forty-five billion, four hundred twenty-six million, three hundred forty-five thousand, six hundred thirty-one".