71499421558 has 4 divisors (see below), whose sum is σ = 107249132340. Its totient is φ = 35749710778.

The previous prime is 71499421501. The next prime is 71499421561. The reversal of 71499421558 is 85512499417.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85512499417 = 10211 ⋅8374547.

It is a super-2 number, since 2×71499421558² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71499421499 and 71499421508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17874855388 + ... + 17874855391.

It is an arithmetic number, because the mean of its divisors is an integer number (26812283085).

Almost surely, 2^71499421558 is an apocalyptic number.

71499421558 is a deficient number, since it is larger than the sum of its proper divisors (35749710782).

71499421558 is a wasteful number, since it uses less digits than its factorization.

71499421558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35749710781.

The product of its digits is 3628800, while the sum is 55.

The spelling of 71499421558 in words is "seventy-one billion, four hundred ninety-nine million, four hundred twenty-one thousand, five hundred fifty-eight".