77606874651 has 4 divisors (see below), whose sum is σ = 103475832872. Its totient is φ = 51737916432.

The previous prime is 77606874649. The next prime is 77606874679. The reversal of 77606874651 is 15647860677.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 77606874651 - 2¹ = 77606874649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77606874591 and 77606874600.

It is not an unprimeable number, because it can be changed into a prime (77606804651) 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 3 ways as a sum of consecutive naturals, for example, 12934479106 + ... + 12934479111.

It is an arithmetic number, because the mean of its divisors is an integer number (25868958218).

Almost surely, 2^77606874651 is an apocalyptic number.

77606874651 is a deficient number, since it is larger than the sum of its proper divisors (25868958221).

77606874651 is a wasteful number, since it uses less digits than its factorization.

77606874651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25868958220.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 77606874651 in words is "seventy-seven billion, six hundred six million, eight hundred seventy-four thousand, six hundred fifty-one".