7770021120 has 288 divisors, whose sum is σ = 29026435200. Its totient is φ = 1962786816.

The previous prime is 7770021097. The next prime is 7770021121. The reversal of 7770021120 is 211200777.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7770021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 650724 + ... + 662556.

Almost surely, 2^7770021120 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 7770021120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14513217600).

7770021120 is an abundant number, since it is smaller than the sum of its proper divisors (21256414080).

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

7770021120 is a wasteful number, since it uses less digits than its factorization.

7770021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11882 (or 11862 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 27.

The square root of 7770021120 is about 88147.7232831342. The cubic root of 7770021120 is about 1980.6484561087.

Adding to 7770021120 its reverse (211200777), we get a palindrome (7981221897).

The spelling of 7770021120 in words is "seven billion, seven hundred seventy million, twenty-one thousand, one hundred twenty".