91006849142 has 16 divisors (see below), whose sum is σ = 148963352400. Its totient is φ = 41354790240.

The previous prime is 91006849117. The next prime is 91006849147. The reversal of 91006849142 is 24194860019.

It is a super-2 number, since 2×91006849142² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91006849093 and 91006849102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91006849147) 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 7 ways as a sum of consecutive naturals, for example, 519917 + ... + 672552.

It is an arithmetic number, because the mean of its divisors is an integer number (9310209525).

Almost surely, 2^91006849142 is an apocalyptic number.

91006849142 is a deficient number, since it is larger than the sum of its proper divisors (57956503258).

91006849142 is a wasteful number, since it uses less digits than its factorization.

91006849142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195951.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 91006849142 in words is "ninety-one billion, six million, eight hundred forty-nine thousand, one hundred forty-two".