76986069577 has 4 divisors (see below), whose sum is σ = 76987515076. Its totient is φ = 76984624080.

The previous prime is 76986069551. The next prime is 76986069599. The reversal of 76986069577 is 77596068967.

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 39694983696 + 37291085881 = 199236^2 + 193109^2 .

It is a cyclic number.

It is not a de Polignac number, because 76986069577 - 2⁷ = 76986069449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76986069527) 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, 639678 + ... + 750439.

It is an arithmetic number, because the mean of its divisors is an integer number (19246878769).

Almost surely, 2^76986069577 is an apocalyptic number.

It is an amenable number.

76986069577 is a deficient number, since it is larger than the sum of its proper divisors (1445499).

76986069577 is a wasteful number, since it uses less digits than its factorization.

76986069577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445498.

The product of its (nonzero) digits is 240045120, while the sum is 70.

The spelling of 76986069577 in words is "seventy-six billion, nine hundred eighty-six million, sixty-nine thousand, five hundred seventy-seven".