71448706075501 has 4 divisors (see below), whose sum is σ = 72104198791900. Its totient is φ = 70793213359104.

The previous prime is 71448706075477. The next prime is 71448706075553. The reversal of 71448706075501 is 10557060784417.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50912491819401 + 20536214256100 = 7135299^2 + 4531690^2 .

It is a cyclic number.

It is not a de Polignac number, because 71448706075501 - 2¹⁹ = 71448705551213 is a prime.

It is a super-2 number, since 2×71448706075501² (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 (71448706075601) 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, 327746358036 + ... + 327746358253.

It is an arithmetic number, because the mean of its divisors is an integer number (18026049697975).

Almost surely, 2^{71448706075501} is an apocalyptic number.

It is an amenable number.

71448706075501 is a deficient number, since it is larger than the sum of its proper divisors (655492716399).

71448706075501 is a wasteful number, since it uses less digits than its factorization.

71448706075501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655492716398.

The product of its (nonzero) digits is 6585600, while the sum is 55.

The spelling of 71448706075501 in words is "seventy-one trillion, four hundred forty-eight billion, seven hundred six million, seventy-five thousand, five hundred one".