77369542068 has 192 divisors, whose sum is σ = 230245621760. Its totient is φ = 19677385728.

The previous prime is 77369542051. The next prime is 77369542073. The reversal of 77369542068 is 86024596377.

It is a junction number, because it is equal to n+sod(n) for n = 77369541999 and 77369542017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3699096 + ... + 3719952.

Almost surely, 2^77369542068 is an apocalyptic number.

77369542068 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77369542068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115122810880).

77369542068 is an abundant number, since it is smaller than the sum of its proper divisors (152876079692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77369542068 is a wasteful number, since it uses less digits than its factorization.

77369542068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21006 (or 21004 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 77369542068 in words is "seventy-seven billion, three hundred sixty-nine million, five hundred forty-two thousand, sixty-eight".