127930695961 has 4 divisors (see below), whose sum is σ = 132342099300. Its totient is φ = 123519292624.

The previous prime is 127930695943. The next prime is 127930695983. The reversal of 127930695961 is 169596039721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108343014025 + 19587681936 = 329155^2 + 139956^2 .

It is a cyclic number.

It is not a de Polignac number, because 127930695961 - 2¹⁹ = 127930171673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 127930695896 and 127930695905.

It is not an unprimeable number, because it can be changed into a prime (127930695931) 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, 2205701626 + ... + 2205701683.

It is an arithmetic number, because the mean of its divisors is an integer number (33085524825).

Almost surely, 2^127930695961 is an apocalyptic number.

It is an amenable number.

127930695961 is a deficient number, since it is larger than the sum of its proper divisors (4411403339).

127930695961 is an equidigital number, since it uses as much as digits as its factorization.

127930695961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411403338.

The product of its (nonzero) digits is 5511240, while the sum is 58.

The spelling of 127930695961 in words is "one hundred twenty-seven billion, nine hundred thirty million, six hundred ninety-five thousand, nine hundred sixty-one".