91851953325 has 96 divisors (see below), whose sum is σ = 170669016960. Its totient is φ = 43197235200.

The previous prime is 91851953321. The next prime is 91851953353. The reversal of 91851953325 is 52335915819.

It is not a de Polignac number, because 91851953325 - 2² = 91851953321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91851953321) 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 95 ways as a sum of consecutive naturals, for example, 10282461 + ... + 10291389.

It is an arithmetic number, because the mean of its divisors is an integer number (1777802260).

Almost surely, 2^91851953325 is an apocalyptic number.

It is an amenable number.

91851953325 is a deficient number, since it is larger than the sum of its proper divisors (78817063635).

91851953325 is a wasteful number, since it uses less digits than its factorization.

91851953325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9327 (or 9322 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 51.

The spelling of 91851953325 in words is "ninety-one billion, eight hundred fifty-one million, nine hundred fifty-three thousand, three hundred twenty-five".