77673377437 has 16 divisors (see below), whose sum is σ = 79778381760. Its totient is φ = 75602160000.

The previous prime is 77673377413. The next prime is 77673377449. The reversal of 77673377437 is 73477337677.

It is a cyclic number.

It is not a de Polignac number, because 77673377437 - 2¹¹ = 77673375389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77673377407) 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 15 ways as a sum of consecutive naturals, for example, 1977762 + ... + 2016652.

It is an arithmetic number, because the mean of its divisors is an integer number (4986148860).

Almost surely, 2^77673377437 is an apocalyptic number.

It is an amenable number.

77673377437 is a deficient number, since it is larger than the sum of its proper divisors (2105004323).

77673377437 is a wasteful number, since it uses less digits than its factorization.

77673377437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39324.

The product of its digits is 76236552, while the sum is 61.

The spelling of 77673377437 in words is "seventy-seven billion, six hundred seventy-three million, three hundred seventy-seven thousand, four hundred thirty-seven".