91048443129 has 48 divisors (see below), whose sum is σ = 152729175040. Its totient is φ = 51189446880.

The previous prime is 91048443113. The next prime is 91048443133. The reversal of 91048443129 is 92134484019.

91048443129 is a `hidden beast` number, since 9 + 1 + 0 + 484 + 43 + 129 = 666.

It is not a de Polignac number, because 91048443129 - 2⁴ = 91048443113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91048443139) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3613284 + ... + 3638394.

Almost surely, 2^91048443129 is an apocalyptic number.

It is an amenable number.

91048443129 is a deficient number, since it is larger than the sum of its proper divisors (61680731911).

91048443129 is a wasteful number, since it uses less digits than its factorization.

91048443129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26050 (or 26047 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 91048443129 in words is "ninety-one billion, forty-eight million, four hundred forty-three thousand, one hundred twenty-nine".