78582681781051 has 16 divisors (see below), whose sum is σ = 95091917215680. Its totient is φ = 63394253245440.

The previous prime is 78582681781013. The next prime is 78582681781207. The reversal of 78582681781051 is 15018718628587.

It is not a de Polignac number, because 78582681781051 - 2⁹ = 78582681780539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78582681781001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55794831 + ... + 57185911.

It is an arithmetic number, because the mean of its divisors is an integer number (5943244825980).

Almost surely, 2^{78582681781051} is an apocalyptic number.

78582681781051 is a deficient number, since it is larger than the sum of its proper divisors (16509235434629).

78582681781051 is a wasteful number, since it uses less digits than its factorization.

78582681781051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865814.

The product of its (nonzero) digits is 60211200, while the sum is 67.

The spelling of 78582681781051 in words is "seventy-eight trillion, five hundred eighty-two billion, six hundred eighty-one million, seven hundred eighty-one thousand, fifty-one".