71551325747 has 8 divisors (see below), whose sum is σ = 78057976320. Its totient is φ = 65045005960.

The previous prime is 71551325743. The next prime is 71551325759. The reversal of 71551325747 is 74752315517.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 71551325747 - 2² = 71551325743 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71551325743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658358 + ... + 759300.

It is an arithmetic number, because the mean of its divisors is an integer number (9757247040).

Almost surely, 2^71551325747 is an apocalyptic number.

71551325747 is a deficient number, since it is larger than the sum of its proper divisors (6506650573).

71551325747 is a wasteful number, since it uses less digits than its factorization.

71551325747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165393.

The product of its digits is 1029000, while the sum is 47.

The spelling of 71551325747 in words is "seventy-one billion, five hundred fifty-one million, three hundred twenty-five thousand, seven hundred forty-seven".