91275127406 has 16 divisors (see below), whose sum is σ = 144138335760. Its totient is φ = 43229672640.

The previous prime is 91275127399. The next prime is 91275127451. The reversal of 91275127406 is 60472157219.

It is a super-2 number, since 2×91275127406² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 123740 + ... + 444816.

It is an arithmetic number, because the mean of its divisors is an integer number (9008645985).

Almost surely, 2^91275127406 is an apocalyptic number.

91275127406 is a deficient number, since it is larger than the sum of its proper divisors (52863208354).

91275127406 is a wasteful number, since it uses less digits than its factorization.

91275127406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328579.

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 91275127406 in words is "ninety-one billion, two hundred seventy-five million, one hundred twenty-seven thousand, four hundred six".