145997344069 has 2 divisors, whose sum is σ = 145997344070. Its totient is φ = 145997344068.

The previous prime is 145997344049. The next prime is 145997344109. The reversal of 145997344069 is 960443799541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77596787844 + 68400556225 = 278562^2 + 261535^2 .

It is a cyclic number.

It is not a de Polignac number, because 145997344069 - 2²⁷ = 145863126341 is a prime.

It is a super-2 number, since 2×145997344069² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145997343998 and 145997344016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145997344039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72998672034 + 72998672035.

It is an arithmetic number, because the mean of its divisors is an integer number (72998672035).

Almost surely, 2^145997344069 is an apocalyptic number.

It is an amenable number.

145997344069 is a deficient number, since it is larger than the sum of its proper divisors (1).

145997344069 is an equidigital number, since it uses as much as digits as its factorization.

145997344069 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 145997344069 in words is "one hundred forty-five billion, nine hundred ninety-seven million, three hundred forty-four thousand, sixty-nine".