84219481747538 has 16 divisors (see below), whose sum is σ = 133090157898720. Its totient is φ = 39859830075456.

The previous prime is 84219481747529. The next prime is 84219481747579. The reversal of 84219481747538 is 83574718491248.

It is a super-2 number, since 2×84219481747538² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 933527831 + ... + 933618042.

It is an arithmetic number, because the mean of its divisors is an integer number (8318134868670).

Almost surely, 2^{84219481747538} is an apocalyptic number.

84219481747538 is a deficient number, since it is larger than the sum of its proper divisors (48870676151182).

84219481747538 is a wasteful number, since it uses less digits than its factorization.

84219481747538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867147081.

The product of its digits is 433520640, while the sum is 71.

The spelling of 84219481747538 in words is "eighty-four trillion, two hundred nineteen billion, four hundred eighty-one million, seven hundred forty-seven thousand, five hundred thirty-eight".