91405676345 has 16 divisors (see below), whose sum is σ = 113538367488. Its totient is φ = 70587961920.

The previous prime is 91405676287. The next prime is 91405676363. The reversal of 91405676345 is 54367650419.

It is not a de Polignac number, because 91405676345 - 2¹⁰ = 91405675321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91405676293 and 91405676302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1921721 + ... + 1968710.

It is an arithmetic number, because the mean of its divisors is an integer number (7096147968).

Almost surely, 2^91405676345 is an apocalyptic number.

It is an amenable number.

91405676345 is a deficient number, since it is larger than the sum of its proper divisors (22132691143).

91405676345 is a wasteful number, since it uses less digits than its factorization.

91405676345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3890600.

The product of its (nonzero) digits is 2721600, while the sum is 50.

The spelling of 91405676345 in words is "ninety-one billion, four hundred five million, six hundred seventy-six thousand, three hundred forty-five".