71794516553 has 2 divisors, whose sum is σ = 71794516554. Its totient is φ = 71794516552.

The previous prime is 71794516513. The next prime is 71794516561. The reversal of 71794516553 is 35561549717.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71568555529 + 225961024 = 267523^2 + 15032^2 .

It is an emirp because it is prime and its reverse (35561549717) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71794516553 is a prime.

It is a super-3 number, since 3×71794516553³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71794516495 and 71794516504.

It is not a weakly prime, because it can be changed into another prime (71794516513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35897258276 + 35897258277.

It is an arithmetic number, because the mean of its divisors is an integer number (35897258277).

Almost surely, 2^71794516553 is an apocalyptic number.

It is an amenable number.

71794516553 is a deficient number, since it is larger than the sum of its proper divisors (1).

71794516553 is an equidigital number, since it uses as much as digits as its factorization.

71794516553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3969000, while the sum is 53.

The spelling of 71794516553 in words is "seventy-one billion, seven hundred ninety-four million, five hundred sixteen thousand, five hundred fifty-three".