125847872677 has 2 divisors, whose sum is σ = 125847872678. Its totient is φ = 125847872676.

The previous prime is 125847872611. The next prime is 125847872687. The reversal of 125847872677 is 776278748521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125184346596 + 663526081 = 353814^2 + 25759^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125847872677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125847872687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62923936338 + 62923936339.

It is an arithmetic number, because the mean of its divisors is an integer number (62923936339).

Almost surely, 2^125847872677 is an apocalyptic number.

It is an amenable number.

125847872677 is a deficient number, since it is larger than the sum of its proper divisors (1).

125847872677 is an equidigital number, since it uses as much as digits as its factorization.

125847872677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73758720, while the sum is 64.

The spelling of 125847872677 in words is "one hundred twenty-five billion, eight hundred forty-seven million, eight hundred seventy-two thousand, six hundred seventy-seven".