91438794325039 has 8 divisors (see below), whose sum is σ = 104571945511040. Its totient is φ = 78323259709656.

The previous prime is 91438794324991. The next prime is 91438794325057. The reversal of 91438794325039 is 93052349783419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91438794325039 - 2¹¹ = 91438794322991 is a prime.

It is a super-2 number, since 2×91438794325039² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91438794325339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4404131529 + ... + 4404152290.

It is an arithmetic number, because the mean of its divisors is an integer number (13071493188880).

Almost surely, 2^{91438794325039} is an apocalyptic number.

91438794325039 is a deficient number, since it is larger than the sum of its proper divisors (13133151186001).

91438794325039 is a wasteful number, since it uses less digits than its factorization.

91438794325039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8808285309.

The product of its (nonzero) digits is 176359680, while the sum is 67.

The spelling of 91438794325039 in words is "ninety-one trillion, four hundred thirty-eight billion, seven hundred ninety-four million, three hundred twenty-five thousand, thirty-nine".