4157821372484 has 12 divisors (see below), whose sum is σ = 7835894125164. Its totient is φ = 1918994479584.

The previous prime is 4157821372477. The next prime is 4157821372493. The reversal of 4157821372484 is 4842731287514.

It can be written as a sum of positive squares in 2 ways, for example, as 1445284840000 + 2712536532484 = 1202200^2 + 1646978^2 .

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 3 ways as a sum of consecutive naturals, for example, 39979051607 + ... + 39979051710.

It is an arithmetic number, because the mean of its divisors is an integer number (652991177097).

Almost surely, 2^{4157821372484} is an apocalyptic number.

It is an amenable number.

4157821372484 is a deficient number, since it is larger than the sum of its proper divisors (3678072752680).

4157821372484 is a wasteful number, since it uses less digits than its factorization.

4157821372484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79958103334 (or 79958103332 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 56.

The spelling of 4157821372484 in words is "four trillion, one hundred fifty-seven billion, eight hundred twenty-one million, three hundred seventy-two thousand, four hundred eighty-four".