125136777617 has 8 divisors (see below), whose sum is σ = 128519445120. Its totient is φ = 121775587920.

The previous prime is 125136777611. The next prime is 125136777637. The reversal of 125136777617 is 716777631521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125136777617 - 2¹⁰ = 125136776593 is a prime.

It is a super-2 number, since 2×125136777617² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125136777611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5357642 + ... + 5380947.

It is an arithmetic number, because the mean of its divisors is an integer number (16064930640).

Almost surely, 2^125136777617 is an apocalyptic number.

It is an amenable number.

125136777617 is a deficient number, since it is larger than the sum of its proper divisors (3382667503).

125136777617 is a wasteful number, since it uses less digits than its factorization.

125136777617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10738903.

The product of its digits is 2593080, while the sum is 53.

The spelling of 125136777617 in words is "one hundred twenty-five billion, one hundred thirty-six million, seven hundred seventy-seven thousand, six hundred seventeen".