91618016543 has 8 divisors (see below), whose sum is σ = 91960290576. Its totient is φ = 91276364800.

The previous prime is 91618016531. The next prime is 91618016597. The reversal of 91618016543 is 34561081619.

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 91618016543 - 2⁴ = 91618016527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91618016494 and 91618016503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91618016843) 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, 140480 + ... + 450522.

It is an arithmetic number, because the mean of its divisors is an integer number (11495036322).

Almost surely, 2^91618016543 is an apocalyptic number.

91618016543 is a deficient number, since it is larger than the sum of its proper divisors (342274033).

91618016543 is a wasteful number, since it uses less digits than its factorization.

91618016543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311145.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 91618016543 in words is "ninety-one billion, six hundred eighteen million, sixteen thousand, five hundred forty-three".