145170660857 has 2 divisors, whose sum is σ = 145170660858. Its totient is φ = 145170660856.

The previous prime is 145170660851. The next prime is 145170660913. The reversal of 145170660857 is 758066071541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94558710016 + 50611950841 = 307504^2 + 224971^2 .

It is a cyclic number.

It is not a de Polignac number, because 145170660857 - 2¹⁰ = 145170659833 is a prime.

It is a super-2 number, since 2×145170660857² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145170660851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72585330428 + 72585330429.

It is an arithmetic number, because the mean of its divisors is an integer number (72585330429).

Almost surely, 2^145170660857 is an apocalyptic number.

It is an amenable number.

145170660857 is a deficient number, since it is larger than the sum of its proper divisors (1).

145170660857 is an equidigital number, since it uses as much as digits as its factorization.

145170660857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The spelling of 145170660857 in words is "one hundred forty-five billion, one hundred seventy million, six hundred sixty thousand, eight hundred fifty-seven".