77888864605 has 32 divisors (see below), whose sum is σ = 97103784960. Its totient is φ = 59931755520.

The previous prime is 77888864587. The next prime is 77888864611. The reversal of 77888864605 is 50646888877.

It is not a de Polignac number, because 77888864605 - 2¹⁵ = 77888831837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12029649 + ... + 12036121.

It is an arithmetic number, because the mean of its divisors is an integer number (3034493280).

Almost surely, 2^77888864605 is an apocalyptic number.

It is an amenable number.

77888864605 is a deficient number, since it is larger than the sum of its proper divisors (19214920355).

77888864605 is a wasteful number, since it uses less digits than its factorization.

77888864605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7341.

The product of its (nonzero) digits is 144506880, while the sum is 67.

The spelling of 77888864605 in words is "seventy-seven billion, eight hundred eighty-eight million, eight hundred sixty-four thousand, six hundred five".