91413757929 has 16 divisors (see below), whose sum is σ = 131266683072. Its totient is φ = 56252090688.

The previous prime is 91413757901. The next prime is 91413757933. The reversal of 91413757929 is 92975731419.

It is a happy number.

It is not a de Polignac number, because 91413757929 - 2⁷ = 91413757801 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91413757129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206679 + ... + 1280195.

It is an arithmetic number, because the mean of its divisors is an integer number (8204167692).

Almost surely, 2^91413757929 is an apocalyptic number.

It is an amenable number.

91413757929 is a deficient number, since it is larger than the sum of its proper divisors (39852925143).

91413757929 is a wasteful number, since it uses less digits than its factorization.

91413757929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105416.

The product of its digits is 4286520, while the sum is 57.

The spelling of 91413757929 in words is "ninety-one billion, four hundred thirteen million, seven hundred fifty-seven thousand, nine hundred twenty-nine".