91838806476 has 12 divisors (see below), whose sum is σ = 214290548472. Its totient is φ = 30612935488.

The previous prime is 91838806459. The next prime is 91838806487. The reversal of 91838806476 is 67460883819.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3826616925 + ... + 3826616948.

It is an arithmetic number, because the mean of its divisors is an integer number (17857545706).

Almost surely, 2^91838806476 is an apocalyptic number.

It is an amenable number.

91838806476 is an abundant number, since it is smaller than the sum of its proper divisors (122451741996).

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

91838806476 is a wasteful number, since it uses less digits than its factorization.

91838806476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7653233880 (or 7653233878 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 91838806476 in words is "ninety-one billion, eight hundred thirty-eight million, eight hundred six thousand, four hundred seventy-six".