71361563124 has 96 divisors (see below), whose sum is σ = 174437625600. Its totient is φ = 22676290560.

The previous prime is 71361563101. The next prime is 71361563131. The reversal of 71361563124 is 42136516317.

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 in 31 ways as a sum of consecutive naturals, for example, 30877929 + ... + 30880239.

It is an arithmetic number, because the mean of its divisors is an integer number (1817058600).

Almost surely, 2^71361563124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71361563124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87218812800).

71361563124 is an abundant number, since it is smaller than the sum of its proper divisors (103076062476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71361563124 is a wasteful number, since it uses less digits than its factorization.

71361563124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433 (or 3431 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The spelling of 71361563124 in words is "seventy-one billion, three hundred sixty-one million, five hundred sixty-three thousand, one hundred twenty-four".