71348748253 has 4 divisors (see below), whose sum is σ = 71526675708. Its totient is φ = 71170820800.

The previous prime is 71348748221. The next prime is 71348748277. The reversal of 71348748253 is 35284784317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35284784317 = 149 ⋅236810633.

It can be written as a sum of positive squares in 2 ways, for example, as 66521694724 + 4827053529 = 257918^2 + 69477^2 .

It is a cyclic number.

It is not a de Polignac number, because 71348748253 - 2⁵ = 71348748221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71348748253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71348748853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88963126 + ... + 88963927.

It is an arithmetic number, because the mean of its divisors is an integer number (17881668927).

Almost surely, 2^71348748253 is an apocalyptic number.

It is an amenable number.

71348748253 is a deficient number, since it is larger than the sum of its proper divisors (177927455).

71348748253 is a wasteful number, since it uses less digits than its factorization.

71348748253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177927454.

The product of its digits is 4515840, while the sum is 52.

The spelling of 71348748253 in words is "seventy-one billion, three hundred forty-eight million, seven hundred forty-eight thousand, two hundred fifty-three".