773696689920 has 864 divisors, whose sum is σ = 3449084190720. Its totient is φ = 160762060800.

The previous prime is 773696689919. The next prime is 773696689951. The reversal of 773696689920 is 29986696377.

It is a tau number, because it is divible by the number of its divisors (864).

It is a super-3 number, since 3×773696689920³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 29259105 + ... + 29285535.

Almost surely, 2^773696689920 is an apocalyptic number.

773696689920 is a gapful number since it is divisible by the number (70) 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 773696689920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1724542095360).

773696689920 is an abundant number, since it is smaller than the sum of its proper divisors (2675387500800).

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

773696689920 is a wasteful number, since it uses less digits than its factorization.

773696689920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26490 (or 26459 counting only the distinct ones).

The product of its (nonzero) digits is 370355328, while the sum is 72.

The spelling of 773696689920 in words is "seven hundred seventy-three billion, six hundred ninety-six million, six hundred eighty-nine thousand, nine hundred twenty".