7651155220 has 24 divisors (see below), whose sum is σ = 16913080800. Its totient is φ = 2899384992.

The previous prime is 7651155121. The next prime is 7651155221. The reversal of 7651155220 is 225511567.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7651155221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10066930 + ... + 10067689.

It is an arithmetic number, because the mean of its divisors is an integer number (704711700).

Almost surely, 2^7651155220 is an apocalyptic number.

It is an amenable number.

7651155220 is an abundant number, since it is smaller than the sum of its proper divisors (9261925580).

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

7651155220 is a wasteful number, since it uses less digits than its factorization.

7651155220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20134647 (or 20134645 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 7651155220 is about 87470.8821265683. The cubic root of 7651155220 is about 1970.4965139451.

Adding to 7651155220 its reverse (225511567), we get a palindrome (7876666787).

The spelling of 7651155220 in words is "seven billion, six hundred fifty-one million, one hundred fifty-five thousand, two hundred twenty".