145617466657 has 4 divisors (see below), whose sum is σ = 156818810260. Its totient is φ = 134416123056.

The previous prime is 145617466651. The next prime is 145617466681. The reversal of 145617466657 is 756664716541.

It is a happy number.

145617466657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 756664716541 = 199 ⋅3802335259.

It can be written as a sum of positive squares in 2 ways, for example, as 73960065936 + 71657400721 = 271956^2 + 267689^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145617466657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145617466651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5600671782 + ... + 5600671807.

It is an arithmetic number, because the mean of its divisors is an integer number (39204702565).

Almost surely, 2^145617466657 is an apocalyptic number.

It is an amenable number.

145617466657 is a deficient number, since it is larger than the sum of its proper divisors (11201343603).

145617466657 is a wasteful number, since it uses less digits than its factorization.

145617466657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11201343602.

The product of its digits is 25401600, while the sum is 58.

The spelling of 145617466657 in words is "one hundred forty-five billion, six hundred seventeen million, four hundred sixty-six thousand, six hundred fifty-seven".