91825064413 has 4 divisors (see below), whose sum is σ = 96657962560. Its totient is φ = 86992166268.

The previous prime is 91825064329. The next prime is 91825064423. The reversal of 91825064413 is 31446052819.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91825064413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91825064413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91825064423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2416449045 + ... + 2416449082.

It is an arithmetic number, because the mean of its divisors is an integer number (24164490640).

Almost surely, 2^91825064413 is an apocalyptic number.

It is an amenable number.

91825064413 is a deficient number, since it is larger than the sum of its proper divisors (4832898147).

91825064413 is a wasteful number, since it uses less digits than its factorization.

91825064413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832898146.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 91825064413 in words is "ninety-one billion, eight hundred twenty-five million, sixty-four thousand, four hundred thirteen".