91350736621 has 8 divisors (see below), whose sum is σ = 91929353760. Its totient is φ = 90772341552.

The previous prime is 91350736591. The next prime is 91350736637. The reversal of 91350736621 is 12663705319.

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 91350736621 - 2¹⁵ = 91350703853 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 (91350736661) 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, 812586 + ... + 918148.

It is an arithmetic number, because the mean of its divisors is an integer number (11491169220).

Almost surely, 2^91350736621 is an apocalyptic number.

It is an amenable number.

91350736621 is a deficient number, since it is larger than the sum of its proper divisors (578617139).

91350736621 is a wasteful number, since it uses less digits than its factorization.

91350736621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111035.

The product of its (nonzero) digits is 204120, while the sum is 43.

The spelling of 91350736621 in words is "ninety-one billion, three hundred fifty million, seven hundred thirty-six thousand, six hundred twenty-one".