5021918722 has 4 divisors (see below), whose sum is σ = 7532878086. Its totient is φ = 2510959360.

The previous prime is 5021918669. The next prime is 5021918729. The reversal of 5021918722 is 2278191205.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2278191205 = 5 ⋅455638241.

It can be written as a sum of positive squares in only one way, i.e., 3545130681 + 1476788041 = 59541^2 + 38429^2 .

It is a super-2 number, since 2×5021918722² = 50439335300748226568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5021918729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1255479679 + ... + 1255479682.

Almost surely, 2^5021918722 is an apocalyptic number.

5021918722 is a deficient number, since it is larger than the sum of its proper divisors (2510959364).

5021918722 is a wasteful number, since it uses less digits than its factorization.

5021918722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2510959363.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 5021918722 is about 70865.4974017681. The cubic root of 5021918722 is about 1712.4710034837.

The spelling of 5021918722 in words is "five billion, twenty-one million, nine hundred eighteen thousand, seven hundred twenty-two".