107256078661 has 4 divisors (see below), whose sum is σ = 107600953824. Its totient is φ = 106911203500.

The previous prime is 107256078619. The next prime is 107256078691. The reversal of 107256078661 is 166870652701.

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: 166870652701 = 3347 ⋅49856783.

It is a cyclic number.

It is not a de Polignac number, because 107256078661 - 2²⁵ = 107222524229 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107256078691) 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, 172437115 + ... + 172437736.

It is an arithmetic number, because the mean of its divisors is an integer number (26900238456).

Almost surely, 2^107256078661 is an apocalyptic number.

It is an amenable number.

107256078661 is a deficient number, since it is larger than the sum of its proper divisors (344875163).

107256078661 is an equidigital number, since it uses as much as digits as its factorization.

107256078661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344875162.

The product of its (nonzero) digits is 846720, while the sum is 49.

The spelling of 107256078661 in words is "one hundred seven billion, two hundred fifty-six million, seventy-eight thousand, six hundred sixty-one".