91125402409 has 8 divisors (see below), whose sum is σ = 95942802240. Its totient is φ = 86310135216.

The previous prime is 91125402383. The next prime is 91125402419. The reversal of 91125402409 is 90420452119.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91125402409 - 2⁷ = 91125402281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91125402419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445069 + ... + 616714.

It is an arithmetic number, because the mean of its divisors is an integer number (11992850280).

Almost surely, 2^91125402409 is an apocalyptic number.

It is an amenable number.

91125402409 is a deficient number, since it is larger than the sum of its proper divisors (4817399831).

91125402409 is a wasteful number, since it uses less digits than its factorization.

91125402409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066319.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 91125402409 in words is "ninety-one billion, one hundred twenty-five million, four hundred two thousand, four hundred nine".