71684015217072 has 80 divisors (see below), whose sum is σ = 185297615407872. Its totient is φ = 23879978115840.

The previous prime is 71684015217037. The next prime is 71684015217079. The reversal of 71684015217072 is 27071251048617.

It is not an unprimeable number, because it can be changed into a prime (71684015217079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553518247 + ... + 553647737.

Almost surely, 2^{71684015217072} is an apocalyptic number.

It is an amenable number.

71684015217072 is an abundant number, since it is smaller than the sum of its proper divisors (113613600190800).

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

71684015217072 is a wasteful number, since it uses less digits than its factorization.

71684015217072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136506 (or 136500 counting only the distinct ones).

The product of its (nonzero) digits is 1317120, while the sum is 51.

The spelling of 71684015217072 in words is "seventy-one trillion, six hundred eighty-four billion, fifteen million, two hundred seventeen thousand, seventy-two".