91009192010 has 16 divisors (see below), whose sum is σ = 178708959072. Its totient is φ = 33094251600.

The previous prime is 91009191953. The next prime is 91009192013. The reversal of 91009192010 is 1029190019.

It is not an unprimeable number, because it can be changed into a prime (91009192013) 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, 413678036 + ... + 413678255.

It is an arithmetic number, because the mean of its divisors is an integer number (11169309942).

Almost surely, 2^91009192010 is an apocalyptic number.

91009192010 is a deficient number, since it is larger than the sum of its proper divisors (87699767062).

91009192010 is a wasteful number, since it uses less digits than its factorization.

91009192010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827356309.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 91009192010 in words is "ninety-one billion, nine million, one hundred ninety-two thousand, ten".