77761381300825 has 12 divisors (see below), whose sum is σ = 100616465544768. Its totient is φ = 59504361342800.

The previous prime is 77761381300817. The next prime is 77761381300891. The reversal of 77761381300825 is 52800318316777.

It is not a de Polignac number, because 77761381300825 - 2³ = 77761381300817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77761381300825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67618591861 + ... + 67618593010.

It is an arithmetic number, because the mean of its divisors is an integer number (8384705462064).

Almost surely, 2^{77761381300825} is an apocalyptic number.

It is an amenable number.

77761381300825 is a deficient number, since it is larger than the sum of its proper divisors (22855084243943).

77761381300825 is a wasteful number, since it uses less digits than its factorization.

77761381300825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135237184904 (or 135237184899 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 58.

The spelling of 77761381300825 in words is "seventy-seven trillion, seven hundred sixty-one billion, three hundred eighty-one million, three hundred thousand, eight hundred twenty-five".