78194432748 has 54 divisors (see below), whose sum is σ = 184730423556. Its totient is φ = 25743533376.

The previous prime is 78194432731. The next prime is 78194432761. The reversal of 78194432748 is 84723449187.

It is a super-2 number, since 2×78194432748² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 86211711 + ... + 86212617.

Almost surely, 2^78194432748 is an apocalyptic number.

It is an amenable number.

78194432748 is an abundant number, since it is smaller than the sum of its proper divisors (106535990808).

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

78194432748 is an frugal number, since it uses more digits than its factorization.

78194432748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1999 (or 1001 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 57.

The spelling of 78194432748 in words is "seventy-eight billion, one hundred ninety-four million, four hundred thirty-two thousand, seven hundred forty-eight".