145056567169 has 4 divisors (see below), whose sum is σ = 145057328896. Its totient is φ = 145055805444.

The previous prime is 145056567143. The next prime is 145056567203. The reversal of 145056567169 is 961765650541.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 961765650541 = 1559 ⋅616911899.

It is a cyclic number.

It is not a de Polignac number, because 145056567169 - 2⁷ = 145056567041 is a prime.

It is a super-2 number, since 2×145056567169² (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 (145056565169) 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, 190072 + ... + 571174.

It is an arithmetic number, because the mean of its divisors is an integer number (36264332224).

Almost surely, 2^145056567169 is an apocalyptic number.

It is an amenable number.

145056567169 is a deficient number, since it is larger than the sum of its proper divisors (761727).

145056567169 is an equidigital number, since it uses as much as digits as its factorization.

145056567169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761726.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 145056567169 in words is "one hundred forty-five billion, fifty-six million, five hundred sixty-seven thousand, one hundred sixty-nine".