77761381130125 has 32 divisors (see below), whose sum is σ = 120992669501184. Its totient is φ = 48474627192000.

The previous prime is 77761381130107. The next prime is 77761381130141. The reversal of 77761381130125 is 52103118316777.

It is not a de Polignac number, because 77761381130125 - 2¹³ = 77761381121933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4039542642 + ... + 4039561891.

It is an arithmetic number, because the mean of its divisors is an integer number (3781020921912).

Almost surely, 2^{77761381130125} is an apocalyptic number.

It is an amenable number.

77761381130125 is a deficient number, since it is larger than the sum of its proper divisors (43231288371059).

77761381130125 is a wasteful number, since it uses less digits than its factorization.

77761381130125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8079104566 (or 8079104556 counting only the distinct ones).

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 77761381130125 in words is "seventy-seven trillion, seven hundred sixty-one billion, three hundred eighty-one million, one hundred thirty thousand, one hundred twenty-five".