71245774412453 has 6 divisors (see below), whose sum is σ = 72263369291142. Its totient is φ = 70242312796040.

The previous prime is 71245774412447. The next prime is 71245774412471. The reversal of 71245774412453 is 35421447754217.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 51879420291169 + 19366354121284 = 7202737^2 + 4400722^2 .

It is not a de Polignac number, because 71245774412453 - 2¹⁶ = 71245774346917 is a prime.

It is a super-2 number, since 2×71245774412453² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71245774412443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7066626026 + ... + 7066636107.

It is an arithmetic number, because the mean of its divisors is an integer number (12043894881857).

Almost surely, 2^{71245774412453} is an apocalyptic number.

It is an amenable number.

71245774412453 is a deficient number, since it is larger than the sum of its proper divisors (1017594878689).

71245774412453 is an equidigital number, since it uses as much as digits as its factorization.

71245774412453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14133262275 (or 14133262204 counting only the distinct ones).

The product of its digits is 26342400, while the sum is 56.

The spelling of 71245774412453 in words is "seventy-one trillion, two hundred forty-five billion, seven hundred seventy-four million, four hundred twelve thousand, four hundred fifty-three".