91396853473381 has 4 divisors (see below), whose sum is σ = 91401469262764. Its totient is φ = 91392237684000.

The previous prime is 91396853473369. The next prime is 91396853473399. The reversal of 91396853473381 is 18337435869319.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2707453048356 + 88689400425025 = 1645434^2 + 9417505^2 .

It is a cyclic number.

It is not a de Polignac number, because 91396853473381 - 2⁴³ = 82600760451173 is a prime.

It is a super-2 number, since 2×91396853473381² (a number of 29 digits) contains 22 as substring.

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 91396853473381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91396853473181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307864990 + ... + 2307904591.

It is an arithmetic number, because the mean of its divisors is an integer number (22850367315691).

Almost surely, 2^{91396853473381} is an apocalyptic number.

It is an amenable number.

91396853473381 is a deficient number, since it is larger than the sum of its proper divisors (4615789383).

91396853473381 is a wasteful number, since it uses less digits than its factorization.

91396853473381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4615789382.

The product of its digits is 352719360, while the sum is 70.

The spelling of 91396853473381 in words is "ninety-one trillion, three hundred ninety-six billion, eight hundred fifty-three million, four hundred seventy-three thousand, three hundred eighty-one".