91667129130 has 24 divisors (see below), whose sum is σ = 238334535972. Its totient is φ = 24444567744.

The previous prime is 91667129107. The next prime is 91667129159. The reversal of 91667129130 is 3192176619.

It can be written as a sum of positive squares in 2 ways, for example, as 85428182961 + 6238946169 = 292281^2 + 78987^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 509261739 + ... + 509261918.

Almost surely, 2^91667129130 is an apocalyptic number.

91667129130 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

91667129130 is an abundant number, since it is smaller than the sum of its proper divisors (146667406842).

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

91667129130 is a wasteful number, since it uses less digits than its factorization.

91667129130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018523670 (or 1018523667 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The spelling of 91667129130 in words is "ninety-one billion, six hundred sixty-seven million, one hundred twenty-nine thousand, one hundred thirty".