91088155653 has 32 divisors (see below), whose sum is σ = 136108570752. Its totient is φ = 53705625600.

The previous prime is 91088155621. The next prime is 91088155661. The reversal of 91088155653 is 35655188019.

It is a happy number.

It is not a de Polignac number, because 91088155653 - 2⁵ = 91088155621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91088155596 and 91088155605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91088155553) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 382251 + ... + 572967.

It is an arithmetic number, because the mean of its divisors is an integer number (4253392836).

Almost surely, 2^91088155653 is an apocalyptic number.

It is an amenable number.

91088155653 is a deficient number, since it is larger than the sum of its proper divisors (45020415099).

91088155653 is a wasteful number, since it uses less digits than its factorization.

91088155653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191125.

The product of its (nonzero) digits is 1296000, while the sum is 51.

The spelling of 91088155653 in words is "ninety-one billion, eighty-eight million, one hundred fifty-five thousand, six hundred fifty-three".