91143616970 has 32 divisors (see below), whose sum is σ = 188384075136. Its totient is φ = 31101134400.

The previous prime is 91143616909. The next prime is 91143616981. The reversal of 91143616970 is 7961634119.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070661 + ... + 3100200.

It is an arithmetic number, because the mean of its divisors is an integer number (5887002348).

Almost surely, 2^91143616970 is an apocalyptic number.

91143616970 is an abundant number, since it is smaller than the sum of its proper divisors (97240458166).

91143616970 is a wasteful number, since it uses less digits than its factorization.

91143616970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6171086.

The product of its (nonzero) digits is 244944, while the sum is 47.

The spelling of 91143616970 in words is "ninety-one billion, one hundred forty-three million, six hundred sixteen thousand, nine hundred seventy".