771247068480 has 896 divisors, whose sum is σ = 3172651008000. Its totient is φ = 172739174400.

The previous prime is 771247068443. The next prime is 771247068481. The reversal of 771247068480 is 84860742177.

771247068480 is a `hidden beast` number, since 7 + 7 + 12 + 470 + 6 + 84 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771247068481) by changing a digit.

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 127 ways as a sum of consecutive naturals, for example, 721465386 + ... + 721466454.

Almost surely, 2^771247068480 is an apocalyptic number.

771247068480 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 771247068480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586325504000).

771247068480 is an abundant number, since it is smaller than the sum of its proper divisors (2401403939520).

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

771247068480 is a wasteful number, since it uses less digits than its factorization.

771247068480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The spelling of 771247068480 in words is "seven hundred seventy-one billion, two hundred forty-seven million, sixty-eight thousand, four hundred eighty".