145674665257 has 16 divisors (see below), whose sum is σ = 161633252160. Its totient is φ = 130169260800.

The previous prime is 145674665249. The next prime is 145674665263. The reversal of 145674665257 is 752566476541.

It is a cyclic number.

It is not a de Polignac number, because 145674665257 - 2³ = 145674665249 is a prime.

It is a super-2 number, since 2×145674665257² (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 (145674665057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8137957 + ... + 8155837.

It is an arithmetic number, because the mean of its divisors is an integer number (10102078260).

Almost surely, 2^145674665257 is an apocalyptic number.

It is an amenable number.

145674665257 is a deficient number, since it is larger than the sum of its proper divisors (15958586903).

145674665257 is a wasteful number, since it uses less digits than its factorization.

145674665257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30504.

The product of its digits is 42336000, while the sum is 58.

The spelling of 145674665257 in words is "one hundred forty-five billion, six hundred seventy-four million, six hundred sixty-five thousand, two hundred fifty-seven".