71647902747 has 12 divisors (see below), whose sum is σ = 105245507640. Its totient is φ = 46955687328.

The previous prime is 71647902737. The next prime is 71647902751. The reversal of 71647902747 is 74720974617.

It is not a de Polignac number, because 71647902747 - 2²⁶ = 71580793883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71647902693 and 71647902702.

It is not an unprimeable number, because it can be changed into a prime (71647902737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67464538 + ... + 67465599.

It is an arithmetic number, because the mean of its divisors is an integer number (8770458970).

Almost surely, 2^71647902747 is an apocalyptic number.

71647902747 is a deficient number, since it is larger than the sum of its proper divisors (33597604893).

71647902747 is a wasteful number, since it uses less digits than its factorization.

71647902747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134930202 (or 134930199 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 71647902747 in words is "seventy-one billion, six hundred forty-seven million, nine hundred two thousand, seven hundred forty-seven".