71789631984 has 60 divisors (see below), whose sum is σ = 229612873776. Its totient is φ = 20511323136.

The previous prime is 71789631971. The next prime is 71789632007. The reversal of 71789631984 is 48913698717.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35608929 + ... + 35610944.

Almost surely, 2^71789631984 is an apocalyptic number.

It is an amenable number.

71789631984 is an abundant number, since it is smaller than the sum of its proper divisors (157823241792).

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

71789631984 is a wasteful number, since it uses less digits than its factorization.

71789631984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71219894 (or 71219885 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 63.

The spelling of 71789631984 in words is "seventy-one billion, seven hundred eighty-nine million, six hundred thirty-one thousand, nine hundred eighty-four".