91387002011 has 8 divisors (see below), whose sum is σ = 93216313344. Its totient is φ = 89575030440.

The previous prime is 91387001987. The next prime is 91387002059. The reversal of 91387002011 is 11020078319.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91387002011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91387002061) 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, 4324295 + ... + 4345376.

It is an arithmetic number, because the mean of its divisors is an integer number (11652039168).

Almost surely, 2^91387002011 is an apocalyptic number.

91387002011 is a deficient number, since it is larger than the sum of its proper divisors (1829311333).

91387002011 is a wasteful number, since it uses less digits than its factorization.

91387002011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8669881.

The product of its (nonzero) digits is 3024, while the sum is 32.

The spelling of 91387002011 in words is "ninety-one billion, three hundred eighty-seven million, two thousand, eleven".