91729215484 has 12 divisors (see below), whose sum is σ = 166061511000. Its totient is φ = 44283069488.

The previous prime is 91729215463. The next prime is 91729215577. The reversal of 91729215484 is 48451292719.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395384434 + ... + 395384665.

It is an arithmetic number, because the mean of its divisors is an integer number (13838459250).

Almost surely, 2^91729215484 is an apocalyptic number.

It is an amenable number.

91729215484 is a deficient number, since it is larger than the sum of its proper divisors (74332295516).

91729215484 is a wasteful number, since it uses less digits than its factorization.

91729215484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790769132 (or 790769130 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The spelling of 91729215484 in words is "ninety-one billion, seven hundred twenty-nine million, two hundred fifteen thousand, four hundred eighty-four".