71489886553 has 4 divisors (see below), whose sum is σ = 71587417828. Its totient is φ = 71392355280.

The previous prime is 71489886547. The next prime is 71489886583. The reversal of 71489886553 is 35568898417.

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 67656171664 + 3833714889 = 260108^2 + 61917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71489886553 is a prime.

It is a super-2 number, since 2×71489886553² (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 (71489886583) 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, 48764538 + ... + 48766003.

It is an arithmetic number, because the mean of its divisors is an integer number (17896854457).

Almost surely, 2^71489886553 is an apocalyptic number.

It is an amenable number.

71489886553 is a deficient number, since it is larger than the sum of its proper divisors (97531275).

71489886553 is an equidigital number, since it uses as much as digits as its factorization.

71489886553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97531274.

The product of its digits is 58060800, while the sum is 64.

The spelling of 71489886553 in words is "seventy-one billion, four hundred eighty-nine million, eight hundred eighty-six thousand, five hundred fifty-three".