91850696501 has 6 divisors (see below), whose sum is σ = 91904070006. Its totient is φ = 91797337800.

The previous prime is 91850696471. The next prime is 91850696527. The reversal of 91850696501 is 10569605819.

It can be written as a sum of positive squares in only one way, i.e., 47256238225 + 44594458276 = 217385^2 + 211174^2 .

It is not a de Polignac number, because 91850696501 - 2⁶ = 91850696437 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91850696501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91850696551) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14785286 + ... + 14791496.

It is an arithmetic number, because the mean of its divisors is an integer number (15317345001).

Almost surely, 2^91850696501 is an apocalyptic number.

It is an amenable number.

91850696501 is a deficient number, since it is larger than the sum of its proper divisors (53373505).

91850696501 is an frugal number, since it uses more digits than its factorization.

91850696501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14803 (or 8592 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 50.

The spelling of 91850696501 in words is "ninety-one billion, eight hundred fifty million, six hundred ninety-six thousand, five hundred one".