71220767753 has 8 divisors (see below), whose sum is σ = 71860279848. Its totient is φ = 70581417984.

The previous prime is 71220767741. The next prime is 71220767789. The reversal of 71220767753 is 35776702217.

It can be written as a sum of positive squares in 4 ways, for example, as 4918637689 + 66302130064 = 70133^2 + 257492^2 .

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 71220767753 - 2¹⁴ = 71220751369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71220767698 and 71220767707.

It is not an unprimeable number, because it can be changed into a prime (71220767713) 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, 948401 + ... + 1020737.

It is an arithmetic number, because the mean of its divisors is an integer number (8982534981).

Almost surely, 2^71220767753 is an apocalyptic number.

It is an amenable number.

71220767753 is a deficient number, since it is larger than the sum of its proper divisors (639512095).

71220767753 is a wasteful number, since it uses less digits than its factorization.

71220767753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81163.

The product of its (nonzero) digits is 864360, while the sum is 47.

The spelling of 71220767753 in words is "seventy-one billion, two hundred twenty million, seven hundred sixty-seven thousand, seven hundred fifty-three".