71696518985 has 192 divisors, whose sum is σ = 115831296000. Its totient is φ = 42152140800.

The previous prime is 71696518979. The next prime is 71696519003. The reversal of 71696518985 is 58981569617.

It is not a de Polignac number, because 71696518985 - 2⁶ = 71696518921 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 360283916 + ... + 360284114.

It is an arithmetic number, because the mean of its divisors is an integer number (603288000).

Almost surely, 2^71696518985 is an apocalyptic number.

It is an amenable number.

71696518985 is a deficient number, since it is larger than the sum of its proper divisors (44134777015).

71696518985 is a wasteful number, since it uses less digits than its factorization.

71696518985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 385 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 65.

The spelling of 71696518985 in words is "seventy-one billion, six hundred ninety-six million, five hundred eighteen thousand, nine hundred eighty-five".