91147551465 has 8 divisors (see below), whose sum is σ = 145836082368. Its totient is φ = 48612027440.

The previous prime is 91147551461. The next prime is 91147551491. The reversal of 91147551465 is 56415574119.

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

It is not a de Polignac number, because 91147551465 - 2² = 91147551461 is a prime.

It is a super-2 number, since 2×91147551465² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91147551461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3038251701 + ... + 3038251730.

It is an arithmetic number, because the mean of its divisors is an integer number (18229510296).

Almost surely, 2^91147551465 is an apocalyptic number.

It is an amenable number.

91147551465 is a deficient number, since it is larger than the sum of its proper divisors (54688530903).

91147551465 is a wasteful number, since it uses less digits than its factorization.

91147551465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6076503439.

The product of its digits is 756000, while the sum is 48.

The spelling of 91147551465 in words is "ninety-one billion, one hundred forty-seven million, five hundred fifty-one thousand, four hundred sixty-five".