91305663109742 has 64 divisors (see below), whose sum is σ = 150673087070208. Its totient is φ = 41357135820000.

The previous prime is 91305663109741. The next prime is 91305663109753. The reversal of 91305663109742 is 24790136650319.

It is a super-2 number, since 2×91305663109742² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91305663109741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102537517 + ... + 1102620327.

It is an arithmetic number, because the mean of its divisors is an integer number (2354266985472).

Almost surely, 2^{91305663109742} is an apocalyptic number.

91305663109742 is a deficient number, since it is larger than the sum of its proper divisors (59367423960466).

91305663109742 is a wasteful number, since it uses less digits than its factorization.

91305663109742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99365.

The product of its (nonzero) digits is 7348320, while the sum is 56.

The spelling of 91305663109742 in words is "ninety-one trillion, three hundred five billion, six hundred sixty-three million, one hundred nine thousand, seven hundred forty-two".