145653197497 has 4 divisors (see below), whose sum is σ = 153319155280. Its totient is φ = 137987239716.

The previous prime is 145653197441. The next prime is 145653197549. The reversal of 145653197497 is 794791356541.

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 145653197497 - 2³⁵ = 111293459129 is a prime.

It is a super-2 number, since 2×145653197497² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145653197197) 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, 3832978863 + ... + 3832978900.

It is an arithmetic number, because the mean of its divisors is an integer number (38329788820).

Almost surely, 2^145653197497 is an apocalyptic number.

It is an amenable number.

145653197497 is a deficient number, since it is larger than the sum of its proper divisors (7665957783).

145653197497 is an equidigital number, since it uses as much as digits as its factorization.

145653197497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7665957782.

The product of its digits is 28576800, while the sum is 61.

The spelling of 145653197497 in words is "one hundred forty-five billion, six hundred fifty-three million, one hundred ninety-seven thousand, four hundred ninety-seven".