91827687043 has 8 divisors (see below), whose sum is σ = 98058487680. Its totient is φ = 85801175040.

The previous prime is 91827687041. The next prime is 91827687047. The reversal of 91827687043 is 34078672819.

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

It is not a de Polignac number, because 91827687043 - 2¹ = 91827687041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91827687041) 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, 51071230 + ... + 51073027.

It is an arithmetic number, because the mean of its divisors is an integer number (12257310960).

Almost surely, 2^91827687043 is an apocalyptic number.

91827687043 is a deficient number, since it is larger than the sum of its proper divisors (6230800637).

91827687043 is a wasteful number, since it uses less digits than its factorization.

91827687043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102144317.

The product of its (nonzero) digits is 4064256, while the sum is 55.

It can be divided in two parts, 918 and 27687043, that added together give a triangular number (27687961 = T₇₄₄₁).

The spelling of 91827687043 in words is "ninety-one billion, eight hundred twenty-seven million, six hundred eighty-seven thousand, forty-three".