91212276007 has 8 divisors (see below), whose sum is σ = 91559967552. Its totient is φ = 90864748800.

The previous prime is 91212275989. The next prime is 91212276011. The reversal of 91212276007 is 70067221219.

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 91212276007 - 2²³ = 91203887399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91212276107) 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 7 ways as a sum of consecutive naturals, for example, 1134882 + ... + 1212592.

It is an arithmetic number, because the mean of its divisors is an integer number (11444995944).

Almost surely, 2^91212276007 is an apocalyptic number.

91212276007 is a deficient number, since it is larger than the sum of its proper divisors (347691545).

91212276007 is a wasteful number, since it uses less digits than its factorization.

91212276007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82169.

The product of its (nonzero) digits is 21168, while the sum is 37.

The spelling of 91212276007 in words is "ninety-one billion, two hundred twelve million, two hundred seventy-six thousand, seven".