91945310000 has 50 divisors (see below), whose sum is σ = 222608814252. Its totient is φ = 36778120000.

The previous prime is 91945309901. The next prime is 91945310053. The reversal of 91945310000 is 1354919.

It is a tau number, because it is divible by the number of its divisors (50).

It is a super-2 number, since 2×91945310000² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4587266 + ... + 4607265.

Almost surely, 2^91945310000 is an apocalyptic number.

It is an amenable number.

91945310000 is an abundant number, since it is smaller than the sum of its proper divisors (130663504252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91945310000 is an equidigital number, since it uses as much as digits as its factorization.

91945310000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9194559 (or 9194538 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 32.

Adding to 91945310000 its reverse (1354919), we get a palindrome (91946664919).

The spelling of 91945310000 in words is "ninety-one billion, nine hundred forty-five million, three hundred ten thousand".