71655674753 has 8 divisors (see below), whose sum is σ = 77187405288. Its totient is φ = 66126766464.

The previous prime is 71655674729. The next prime is 71655674801. The reversal of 71655674753 is 35747655617.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17463093904 + 54192580849 = 132148^2 + 232793^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71655674753 - 2¹⁴ = 71655658369 is a prime.

It is a super-2 number, since 2×71655674753² (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 (71655674353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 652676 + ... + 754517.

It is an arithmetic number, because the mean of its divisors is an integer number (9648425661).

Almost surely, 2^71655674753 is an apocalyptic number.

It is an amenable number.

71655674753 is a deficient number, since it is larger than the sum of its proper divisors (5531730535).

71655674753 is a wasteful number, since it uses less digits than its factorization.

71655674753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411123.

The product of its digits is 18522000, while the sum is 56.

The spelling of 71655674753 in words is "seventy-one billion, six hundred fifty-five million, six hundred seventy-four thousand, seven hundred fifty-three".