5191165620 has 72 divisors (see below), whose sum is σ = 15768829440. Its totient is φ = 1382351040.

The previous prime is 5191165607. The next prime is 5191165621. The reversal of 5191165620 is 265611915.

5191165620 is a `hidden beast` number, since 5 + 1 + 91 + 1 + 6 + 562 + 0 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5191165621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 109365 + ... + 149475.

It is an arithmetic number, because the mean of its divisors is an integer number (219011520).

Almost surely, 2^5191165620 is an apocalyptic number.

It is an amenable number.

5191165620 is an abundant number, since it is smaller than the sum of its proper divisors (10577663820).

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

5191165620 is a wasteful number, since it uses less digits than its factorization.

5191165620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40845 (or 40840 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 5191165620 is about 72049.7440661658. The cubic root of 5191165620 is about 1731.4965410296.

The spelling of 5191165620 in words is "five billion, one hundred ninety-one million, one hundred sixty-five thousand, six hundred twenty".