77063898960 has 400 divisors, whose sum is σ = 276077861136. Its totient is φ = 19908550656.

The previous prime is 77063898943. The next prime is 77063898973. The reversal of 77063898960 is 6989836077.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7659050256 + 69404848704 = 87516^2 + 263448^2 .

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 in 79 ways as a sum of consecutive naturals, for example, 70249132 + ... + 70250228.

Almost surely, 2^77063898960 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77063898960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138038930568).

77063898960 is an abundant number, since it is smaller than the sum of its proper divisors (199013962176).

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

77063898960 is a wasteful number, since it uses less digits than its factorization.

77063898960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 77063898960 in words is "seventy-seven billion, sixty-three million, eight hundred ninety-eight thousand, nine hundred sixty".