79781683464 has 96 divisors (see below), whose sum is σ = 248887941120. Its totient is φ = 22615262208.

The previous prime is 79781683463. The next prime is 79781683489. The reversal of 79781683464 is 46438618797.

79781683464 is a `hidden beast` number, since 7 + 9 + 7 + 8 + 168 + 3 + 464 = 666.

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 not an unprimeable number, because it can be changed into a prime (79781683463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 559209 + ... + 687224.

It is an arithmetic number, because the mean of its divisors is an integer number (2592582720).

Almost surely, 2^79781683464 is an apocalyptic number.

It is an amenable number.

79781683464 is an abundant number, since it is smaller than the sum of its proper divisors (169106257656).

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

79781683464 is a wasteful number, since it uses less digits than its factorization.

79781683464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246579 (or 1246572 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 79781683464 in words is "seventy-nine billion, seven hundred eighty-one million, six hundred eighty-three thousand, four hundred sixty-four".