91045555045 has 16 divisors (see below), whose sum is σ = 116142320448. Its totient is φ = 68278816000.

The previous prime is 91045555019. The next prime is 91045555057. The reversal of 91045555045 is 54055554019.

It is a happy number.

It is not a de Polignac number, because 91045555045 - 2¹⁵ = 91045522277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91045554992 and 91045555010.

It is a congruent number.

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, 2112379 + ... + 2155048.

It is an arithmetic number, because the mean of its divisors is an integer number (7258895028).

Almost surely, 2^91045555045 is an apocalyptic number.

It is an amenable number.

91045555045 is a deficient number, since it is larger than the sum of its proper divisors (25096765403).

91045555045 is a wasteful number, since it uses less digits than its factorization.

91045555045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267700.

The product of its (nonzero) digits is 450000, while the sum is 43.

The spelling of 91045555045 in words is "ninety-one billion, forty-five million, five hundred fifty-five thousand, forty-five".