91063910782 has 32 divisors (see below), whose sum is σ = 147978399744. Its totient is φ = 41779768800.

The previous prime is 91063910719. The next prime is 91063910797. The reversal of 91063910782 is 28701936019.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7974657 + ... + 7986067.

It is an arithmetic number, because the mean of its divisors is an integer number (4624324992).

Almost surely, 2^91063910782 is an apocalyptic number.

91063910782 is a deficient number, since it is larger than the sum of its proper divisors (56914488962).

91063910782 is a wasteful number, since it uses less digits than its factorization.

91063910782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13224.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 91063910782 in words is "ninety-one billion, sixty-three million, nine hundred ten thousand, seven hundred eighty-two".