91135356655 has 16 divisors (see below), whose sum is σ = 124996299840. Its totient is φ = 62487482112.

The previous prime is 91135356583. The next prime is 91135356671. The reversal of 91135356655 is 55665353119.

It is a cyclic number.

It is not a de Polignac number, because 91135356655 - 2⁷ = 91135356527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91135356599 and 91135356608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 329397 + ... + 539233.

It is an arithmetic number, because the mean of its divisors is an integer number (7812268740).

Almost surely, 2^91135356655 is an apocalyptic number.

91135356655 is a deficient number, since it is larger than the sum of its proper divisors (33860943185).

91135356655 is a wasteful number, since it uses less digits than its factorization.

91135356655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222258.

The product of its digits is 1822500, while the sum is 49.

The spelling of 91135356655 in words is "ninety-one billion, one hundred thirty-five million, three hundred fifty-six thousand, six hundred fifty-five".