109625181697 has 4 divisors (see below), whose sum is σ = 109656091696. Its totient is φ = 109594271700.

The previous prime is 109625181637. The next prime is 109625181703. The reversal of 109625181697 is 796181526901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796181526901 = 62989 ⋅12640009.

It is a cyclic number.

It is not a de Polignac number, because 109625181697 - 2³⁵ = 75265443329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109625181637) 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, 15449679 + ... + 15456772.

It is an arithmetic number, because the mean of its divisors is an integer number (27414022924).

Almost surely, 2^109625181697 is an apocalyptic number.

It is an amenable number.

109625181697 is a deficient number, since it is larger than the sum of its proper divisors (30909999).

109625181697 is an equidigital number, since it uses as much as digits as its factorization.

109625181697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30909998.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The spelling of 109625181697 in words is "one hundred nine billion, six hundred twenty-five million, one hundred eighty-one thousand, six hundred ninety-seven".