91396144160 has 24 divisors (see below), whose sum is σ = 215923390956. Its totient is φ = 36558457600.

The previous prime is 91396144139. The next prime is 91396144171. The reversal of 91396144160 is 6144169319.

It can be written as a sum of positive squares in 2 ways, for example, as 83861209744 + 7534934416 = 289588^2 + 86804^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285612791 + ... + 285613110.

Almost surely, 2^91396144160 is an apocalyptic number.

It is an amenable number.

91396144160 is an abundant number, since it is smaller than the sum of its proper divisors (124527246796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91396144160 is a wasteful number, since it uses less digits than its factorization.

91396144160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571225916 (or 571225908 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 91396144160 in words is "ninety-one billion, three hundred ninety-six million, one hundred forty-four thousand, one hundred sixty".