770020655040 has 1792 divisors, whose sum is σ = 3446477475840. Its totient is φ = 159523209216.

The previous prime is 770020655017. The next prime is 770020655059. The reversal of 770020655040 is 40556020077.

770020655040 is a `hidden beast` number, since 7 + 70 + 0 + 20 + 65 + 504 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 770020654986 and 770020655004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 6814342024 + ... + 6814342136.

It is an arithmetic number, because the mean of its divisors is an integer number (1923257520).

Almost surely, 2^770020655040 is an apocalyptic number.

770020655040 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 770020655040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723238737920).

770020655040 is an abundant number, since it is smaller than the sum of its proper divisors (2676456820800).

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

770020655040 is a wasteful number, since it uses less digits than its factorization.

770020655040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278 (or 250 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The spelling of 770020655040 in words is "seven hundred seventy billion, twenty million, six hundred fifty-five thousand, forty".