4050721980 has 96 divisors (see below), whose sum is σ = 12611450880. Its totient is φ = 1079403840.

The previous prime is 4050721933. The next prime is 4050721993. The reversal of 4050721980 is 891270504.

4050721980 is a `hidden beast` number, since 40 + 507 + 21 + 98 + 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1462557 + ... + 1465323.

It is an arithmetic number, because the mean of its divisors is an integer number (131369280).

Almost surely, 2^4050721980 is an apocalyptic number.

It is an amenable number.

4050721980 is an abundant number, since it is smaller than the sum of its proper divisors (8560728900).

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

4050721980 is a wasteful number, since it uses less digits than its factorization.

4050721980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5496 (or 5488 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 4050721980 is about 63645.2824646101. The cubic root of 4050721980 is about 1594.0825664466.

The spelling of 4050721980 in words is "four billion, fifty million, seven hundred twenty-one thousand, nine hundred eighty".