7775216020 has 96 divisors (see below), whose sum is σ = 19801506816. Its totient is φ = 2525644800.

The previous prime is 7775216003. The next prime is 7775216021. The reversal of 7775216020 is 206125777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7775216021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44812 + ... + 132508.

It is an arithmetic number, because the mean of its divisors is an integer number (206265696).

Almost surely, 2^7775216020 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 7775216020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9900753408).

7775216020 is an abundant number, since it is smaller than the sum of its proper divisors (12026290796).

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

7775216020 is a wasteful number, since it uses less digits than its factorization.

7775216020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87761 (or 87759 counting only the distinct ones).

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 7775216020 is about 88177.1853712739. The cubic root of 7775216020 is about 1981.0897667255.

The spelling of 7775216020 in words is "seven billion, seven hundred seventy-five million, two hundred sixteen thousand, twenty".