971395492099 has 32 divisors (see below), whose sum is σ = 1041529587840. Its totient is φ = 903982768128.

The previous prime is 971395492073. The next prime is 971395492121. The reversal of 971395492099 is 990294593179.

971395492099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 971395492099 - 2⁷ = 971395491971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (971395492009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64696117 + ... + 64711129.

It is an arithmetic number, because the mean of its divisors is an integer number (32547799620).

Almost surely, 2^971395492099 is an apocalyptic number.

971395492099 is a deficient number, since it is larger than the sum of its proper divisors (70134095741).

971395492099 is a wasteful number, since it uses less digits than its factorization.

971395492099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631.

The product of its (nonzero) digits is 49601160, while the sum is 67.

The spelling of 971395492099 in words is "nine hundred seventy-one billion, three hundred ninety-five million, four hundred ninety-two thousand, ninety-nine".