147996665431 has 4 divisors (see below), whose sum is σ = 151438448392. Its totient is φ = 144554882472.

The previous prime is 147996665407. The next prime is 147996665491. The reversal of 147996665431 is 134566699741.

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 147996665431 - 2³¹ = 145849181783 is a prime.

It is a super-2 number, since 2×147996665431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147996665431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147996665491) 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, 1720891416 + ... + 1720891501.

It is an arithmetic number, because the mean of its divisors is an integer number (37859612098).

Almost surely, 2^147996665431 is an apocalyptic number.

147996665431 is a deficient number, since it is larger than the sum of its proper divisors (3441782961).

147996665431 is an equidigital number, since it uses as much as digits as its factorization.

147996665431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441782960.

The product of its digits is 29393280, while the sum is 61.

The spelling of 147996665431 in words is "one hundred forty-seven billion, nine hundred ninety-six million, six hundred sixty-five thousand, four hundred thirty-one".