71786435712 has 64 divisors (see below), whose sum is σ = 191004881760. Its totient is φ = 23888384000.

The previous prime is 71786435681. The next prime is 71786435741. The reversal of 71786435712 is 21753468717.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70087 + ... + 385337.

Almost surely, 2^71786435712 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 71786435712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95502440880).

71786435712 is an abundant number, since it is smaller than the sum of its proper divisors (119218446048).

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

71786435712 is a wasteful number, since it uses less digits than its factorization.

71786435712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315861 (or 315849 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 51.

The spelling of 71786435712 in words is "seventy-one billion, seven hundred eighty-six million, four hundred thirty-five thousand, seven hundred twelve".