71647620239 has 8 divisors (see below), whose sum is σ = 81219974640. Its totient is φ = 62655408576.

The previous prime is 71647620227. The next prime is 71647620251. The reversal of 71647620239 is 93202674617.

It is an interprime number because it is at equal distance from previous prime (71647620227) and next prime (71647620251).

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

It is a cyclic number.

It is not a de Polignac number, because 71647620239 - 2¹² = 71647616143 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71647620193 and 71647620202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71647620259) 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, 145035422 + ... + 145035915.

It is an arithmetic number, because the mean of its divisors is an integer number (10152496830).

Almost surely, 2^71647620239 is an apocalyptic number.

71647620239 is a deficient number, since it is larger than the sum of its proper divisors (9572354401).

71647620239 is a wasteful number, since it uses less digits than its factorization.

71647620239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290071369.

The product of its (nonzero) digits is 762048, while the sum is 47.

The spelling of 71647620239 in words is "seventy-one billion, six hundred forty-seven million, six hundred twenty thousand, two hundred thirty-nine".