78682271432 has 12 divisors (see below), whose sum is σ = 147530746545. Its totient is φ = 39340739024.

The previous prime is 78682271411. The next prime is 78682271441. The reversal of 78682271432 is 23417228687.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 63981678916 + 14700592516 = 252946^2 + 121246^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=198346.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 743798 + ... + 842970.

Almost surely, 2^78682271432 is an apocalyptic number.

It is an amenable number.

78682271432 is a deficient number, since it is larger than the sum of its proper divisors (68848475113).

78682271432 is an frugal number, since it uses more digits than its factorization.

78682271432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198352 (or 99175 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

Multiplying 78682271432 by its sum of digits (50), we get a square (3934113571600 = 1983460²).

The spelling of 78682271432 in words is "seventy-eight billion, six hundred eighty-two million, two hundred seventy-one thousand, four hundred thirty-two".