5168721910 has 48 divisors (see below), whose sum is σ = 10579086000. Its totient is φ = 1814711360.

The previous prime is 5168721907. The next prime is 5168721931. The reversal of 5168721910 is 191278615.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38560 + ... + 108739.

It is an arithmetic number, because the mean of its divisors is an integer number (220397625).

Almost surely, 2^5168721910 is an apocalyptic number.

5168721910 is an abundant number, since it is smaller than the sum of its proper divisors (5410364090).

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

5168721910 is a wasteful number, since it uses less digits than its factorization.

5168721910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147357 (or 147346 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 40.

The square root of 5168721910 is about 71893.8238654754. The cubic root of 5168721910 is about 1728.9975938612.

The spelling of 5168721910 in words is "five billion, one hundred sixty-eight million, seven hundred twenty-one thousand, nine hundred ten".