145639216231 has 8 divisors (see below), whose sum is σ = 154165009680. Its totient is φ = 137347006272.

The previous prime is 145639216213. The next prime is 145639216237. The reversal of 145639216231 is 132612936541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145639216231 - 2⁵ = 145639216199 is a prime.

It is a super-2 number, since 2×145639216231² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145639216237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58394590 + ... + 58397083.

It is an arithmetic number, because the mean of its divisors is an integer number (19270626210).

Almost surely, 2^145639216231 is an apocalyptic number.

145639216231 is a deficient number, since it is larger than the sum of its proper divisors (8525793449).

145639216231 is a wasteful number, since it uses less digits than its factorization.

145639216231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116791745.

The product of its digits is 233280, while the sum is 43.

The spelling of 145639216231 in words is "one hundred forty-five billion, six hundred thirty-nine million, two hundred sixteen thousand, two hundred thirty-one".