5011721988 has 192 divisors, whose sum is σ = 15086518272. Its totient is φ = 1258583040.

The previous prime is 5011721983. The next prime is 5011721999. The reversal of 5011721988 is 8891271105.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (5011721983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9619168 + ... + 9619688.

It is an arithmetic number, because the mean of its divisors is an integer number (78575616).

Almost surely, 2^5011721988 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 5011721988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7543259136).

5011721988 is an abundant number, since it is smaller than the sum of its proper divisors (10074796284).

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

5011721988 is a wasteful number, since it uses less digits than its factorization.

5011721988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The square root of 5011721988 is about 70793.5165675502. The cubic root of 5011721988 is about 1711.3111916065.

The spelling of 5011721988 in words is "five billion, eleven million, seven hundred twenty-one thousand, nine hundred eighty-eight".