107697605991 has 4 divisors (see below), whose sum is σ = 143596807992. Its totient is φ = 71798403992.

The previous prime is 107697605989. The next prime is 107697606001. The reversal of 107697605991 is 199506796701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 199506796701 = 3 ⋅66502265567.

It is a cyclic number.

It is not a de Polignac number, because 107697605991 - 2¹ = 107697605989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107697605971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17949600996 + ... + 17949601001.

It is an arithmetic number, because the mean of its divisors is an integer number (35899201998).

Almost surely, 2^107697605991 is an apocalyptic number.

107697605991 is a deficient number, since it is larger than the sum of its proper divisors (35899202001).

107697605991 is an equidigital number, since it uses as much as digits as its factorization.

107697605991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35899202000.

The product of its (nonzero) digits is 6429780, while the sum is 60.

The spelling of 107697605991 in words is "one hundred seven billion, six hundred ninety-seven million, six hundred five thousand, nine hundred ninety-one".