1746621642253 has 2 divisors, whose sum is σ = 1746621642254. Its totient is φ = 1746621642252.

The previous prime is 1746621642229. The next prime is 1746621642257. The reversal of 1746621642253 is 3522461266471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1102369803844 + 644251838409 = 1049938^2 + 802653^2 .

It is a cyclic number.

It is not a de Polignac number, because 1746621642253 - 2⁵ = 1746621642221 is a prime.

It is a super-2 number, since 2×1746621642253² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1746621642197 and 1746621642206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1746621642257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 873310821126 + 873310821127.

It is an arithmetic number, because the mean of its divisors is an integer number (873310821127).

Almost surely, 2^{1746621642253} is an apocalyptic number.

It is an amenable number.

1746621642253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1746621642253 is an equidigital number, since it uses as much as digits as its factorization.

1746621642253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 49.

The spelling of 1746621642253 in words is "one trillion, seven hundred forty-six billion, six hundred twenty-one million, six hundred forty-two thousand, two hundred fifty-three".