77838488483877 has 48 divisors (see below), whose sum is σ = 129118485038400. Its totient is φ = 44689050017280.

The previous prime is 77838488483869. The next prime is 77838488483909.

77838488483877 is a `hidden beast` number, since 7 + 7 + 8 + 3 + 8 + 48 + 8 + 483 + 87 + 7 = 666.

77838488483877 is nontrivially palindromic in base 10.

77838488483877 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 77838488483877 - 2³ = 77838488483869 is a prime.

It is a super-2 number, since 2×77838488483877² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77838488483377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27767499 + ... + 30441927.

It is an arithmetic number, because the mean of its divisors is an integer number (2689968438300).

Almost surely, 2^{77838488483877} is an apocalyptic number.

It is an amenable number.

77838488483877 is a deficient number, since it is larger than the sum of its proper divisors (51279996554523).

77838488483877 is a wasteful number, since it uses less digits than its factorization.

77838488483877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2689938 (or 2689935 counting only the distinct ones).

The product of its digits is 90634715136, while the sum is 90.

The spelling of 77838488483877 in words is "seventy-seven trillion, eight hundred thirty-eight billion, four hundred eighty-eight million, four hundred eighty-three thousand, eight hundred seventy-seven".