773817987360 has 384 divisors, whose sum is σ = 2864255385600. Its totient is φ = 173646950400.

The previous prime is 773817987343. The next prime is 773817987361. The reversal of 773817987360 is 63789718377.

It is a super-2 number, since 2×773817987360² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 773817987291 and 773817987300.

It is not an unprimeable number, because it can be changed into a prime (773817987361) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3661866 + ... + 3867414.

It is an arithmetic number, because the mean of its divisors is an integer number (7458998400).

Almost surely, 2^773817987360 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 773817987360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1432127692800).

773817987360 is an abundant number, since it is smaller than the sum of its proper divisors (2090437398240).

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

773817987360 is a wasteful number, since it uses less digits than its factorization.

773817987360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205632 (or 205624 counting only the distinct ones).

The product of its (nonzero) digits is 74680704, while the sum is 66.

The spelling of 773817987360 in words is "seven hundred seventy-three billion, eight hundred seventeen million, nine hundred eighty-seven thousand, three hundred sixty".