91063781296 has 20 divisors (see below), whose sum is σ = 177825340672. Its totient is φ = 45173370816.

The previous prime is 91063781231. The next prime is 91063781321. The reversal of 91063781296 is 69218736019.

It is a happy number.

It is a super-2 number, since 2×91063781296² (a number of 23 digits) contains 22 as substring.

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, 22405395 + ... + 22409458.

Almost surely, 2^91063781296 is an apocalyptic number.

It is an amenable number.

91063781296 is a deficient number, since it is larger than the sum of its proper divisors (86761559376).

91063781296 is a wasteful number, since it uses less digits than its factorization.

91063781296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44814988 (or 44814982 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 91063781296 in words is "ninety-one billion, sixty-three million, seven hundred eighty-one thousand, two hundred ninety-six".