77835460852 has 6 divisors (see below), whose sum is σ = 136212056498. Its totient is φ = 38917730424.

The previous prime is 77835460847. The next prime is 77835460867. The reversal of 77835460852 is 25806453877.

It can be written as a sum of positive squares in only one way, i.e., 59791986576 + 18043474276 = 244524^2 + 134326^2 .

It is a junction number, because it is equal to n+sod(n) for n = 77835460793 and 77835460802.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9729432603 + ... + 9729432610.

Almost surely, 2^77835460852 is an apocalyptic number.

It is an amenable number.

77835460852 is a deficient number, since it is larger than the sum of its proper divisors (58376595646).

77835460852 is a wasteful number, since it uses less digits than its factorization.

77835460852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19458865217 (or 19458865215 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 77835460852 in words is "seventy-seven billion, eight hundred thirty-five million, four hundred sixty thousand, eight hundred fifty-two".