71693811048 has 128 divisors (see below), whose sum is σ = 185370353280. Its totient is φ = 23095188480.

The previous prime is 71693810977. The next prime is 71693811061. The reversal of 71693811048 is 84011839617.

It is a Cunningham number, because it is equal to 267757²-1.

It is a super-3 number, since 3×71693811048³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 71693810988 and 71693811006.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44446690 + ... + 44448302.

It is an arithmetic number, because the mean of its divisors is an integer number (1448205885).

Almost surely, 2^71693811048 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 71693811048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92685176640).

71693811048 is an abundant number, since it is smaller than the sum of its proper divisors (113676542232).

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

71693811048 is a wasteful number, since it uses less digits than its factorization.

71693811048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2175 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 71693811048 in words is "seventy-one billion, six hundred ninety-three million, eight hundred eleven thousand, forty-eight".