78791081451 has 8 divisors (see below), whose sum is σ = 105372162624. Its totient is φ = 52368693960.

The previous prime is 78791081431. The next prime is 78791081477. The reversal of 78791081451 is 15418019787.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78791081451 - 2⁶ = 78791081387 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 78791081394 and 78791081403.

It is not an unprimeable number, because it can be changed into a prime (78791081431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39672261 + ... + 39674246.

It is an arithmetic number, because the mean of its divisors is an integer number (13171520328).

Almost surely, 2^78791081451 is an apocalyptic number.

78791081451 is a deficient number, since it is larger than the sum of its proper divisors (26581081173).

78791081451 is a wasteful number, since it uses less digits than its factorization.

78791081451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79346841.

The product of its (nonzero) digits is 564480, while the sum is 51.

The spelling of 78791081451 in words is "seventy-eight billion, seven hundred ninety-one million, eighty-one thousand, four hundred fifty-one".