71734732520 has 64 divisors (see below), whose sum is σ = 176117457600. Its totient is φ = 26079239680.

The previous prime is 71734732519. The next prime is 71734732547. The reversal of 71734732520 is 2523743717.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2134487 + ... + 2167833.

It is an arithmetic number, because the mean of its divisors is an integer number (2751835275).

Almost surely, 2^71734732520 is an apocalyptic number.

It is an amenable number.

71734732520 is an abundant number, since it is smaller than the sum of its proper divisors (104382725080).

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

71734732520 is a wasteful number, since it uses less digits than its factorization.

71734732520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38258 (or 38254 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 71734732520 in words is "seventy-one billion, seven hundred thirty-four million, seven hundred thirty-two thousand, five hundred twenty".