91678150656 has 351 divisors, whose sum is σ = 282894770379. Its totient is φ = 28602187776.

The previous prime is 91678150589. The next prime is 91678150657. The reversal of 91678150656 is 65605187619.

The square root of 91678150656 is 302784.

It is a perfect power (a square), and thus also a powerful number.

91678150656 is a `hidden beast` number, since 9 + 1 + 6 + 7 + 81 + 506 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (91678150657) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1104555991 + ... + 1104556073.

Almost surely, 2^91678150656 is an apocalyptic number.

91678150656 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

91678150656 is the 302784-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91678150656

91678150656 is an abundant number, since it is smaller than the sum of its proper divisors (191216619723).

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

91678150656 is an equidigital number, since it uses as much as digits as its factorization.

91678150656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 2721600, while the sum is 54.

The spelling of 91678150656 in words is "ninety-one billion, six hundred seventy-eight million, one hundred fifty thousand, six hundred fifty-six".