78796419849 has 27 divisors (see below), whose sum is σ = 132409332237. Its totient is φ = 45023157144.

The previous prime is 78796419841. The next prime is 78796419869. The reversal of 78796419849 is 94891469787.

The square root of 78796419849 is 280707.

It is a perfect power (a square), and thus also a powerful number.

78796419849 is a `hidden beast` number, since 7 + 87 + 96 + 419 + 8 + 49 = 666.

It is not a de Polignac number, because 78796419849 - 2³ = 78796419841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78796419841) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5888164 + ... + 5901530.

Almost surely, 2^78796419849 is an apocalyptic number.

78796419849 is the 280707-th square number.

78796419849 is the 140354-th centered octagonal number.

It is an amenable number.

78796419849 is a deficient number, since it is larger than the sum of its proper divisors (53612912388).

78796419849 is an frugal number, since it uses more digits than its factorization.

78796419849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26754 (or 13377 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 72.

The spelling of 78796419849 in words is "seventy-eight billion, seven hundred ninety-six million, four hundred nineteen thousand, eight hundred forty-nine".