91090929102 has 32 divisors (see below), whose sum is σ = 185715718272. Its totient is φ = 29778660384.

The previous prime is 91090929101. The next prime is 91090929103. The reversal of 91090929102 is 20192909019.

It is an interprime number because it is at equal distance from previous prime (91090929101) and next prime (91090929103).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91090929101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407853 + ... + 590360.

It is an arithmetic number, because the mean of its divisors is an integer number (5803616196).

Almost surely, 2^91090929102 is an apocalyptic number.

91090929102 is an abundant number, since it is smaller than the sum of its proper divisors (94624789170).

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

91090929102 is a wasteful number, since it uses less digits than its factorization.

91090929102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998512.

The product of its (nonzero) digits is 26244, while the sum is 42.

The spelling of 91090929102 in words is "ninety-one billion, ninety million, nine hundred twenty-nine thousand, one hundred two".