5181122780 has 24 divisors (see below), whose sum is σ = 10941149520. Its totient is φ = 2060869760.

The previous prime is 5181122777. The next prime is 5181122813. The reversal of 5181122780 is 872211815.

It is a super-2 number, since 2×5181122780² = 53688066522869856800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5181122780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720041 + ... + 727200.

It is an arithmetic number, because the mean of its divisors is an integer number (455881230).

Almost surely, 2^5181122780 is an apocalyptic number.

It is an amenable number.

5181122780 is an abundant number, since it is smaller than the sum of its proper divisors (5760026740).

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

5181122780 is a wasteful number, since it uses less digits than its factorization.

5181122780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447429 (or 1447427 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 5181122780 is about 71980.0165323682. The cubic root of 5181122780 is about 1730.3792345802.

The spelling of 5181122780 in words is "five billion, one hundred eighty-one million, one hundred twenty-two thousand, seven hundred eighty".