71339061309720 has 128 divisors (see below), whose sum is σ = 226609079889600. Its totient is φ = 17904496214016.

The previous prime is 71339061309671. The next prime is 71339061309721. The reversal of 71339061309720 is 2790316093317.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71339061309721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248305992 + ... + 248593128.

Almost surely, 2^{71339061309720} is an apocalyptic number.

It is an amenable number.

71339061309720 is an abundant number, since it is smaller than the sum of its proper divisors (155270018579880).

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

71339061309720 is a wasteful number, since it uses less digits than its factorization.

71339061309720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408957 (or 408953 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 51.

The spelling of 71339061309720 in words is "seventy-one trillion, three hundred thirty-nine billion, sixty-one million, three hundred nine thousand, seven hundred twenty".