84553937881 has 12 divisors (see below), whose sum is σ = 99229099572. Its totient is φ = 71833429248.

The previous prime is 84553937861. The next prime is 84553937939. The reversal of 84553937881 is 18873935548.

It can be written as a sum of positive squares in 2 ways, for example, as 33789792400 + 50764145481 = 183820^2 + 225309^2 .

It is not a de Polignac number, because 84553937881 - 2¹⁷ = 84553806809 is a prime.

It is a super-2 number, since 2×84553937881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84553937861) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7629820 + ... + 7640893.

It is an arithmetic number, because the mean of its divisors is an integer number (8269091631).

Almost surely, 2^84553937881 is an apocalyptic number.

It is an amenable number.

84553937881 is a deficient number, since it is larger than the sum of its proper divisors (14675161691).

84553937881 is a wasteful number, since it uses less digits than its factorization.

84553937881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270840 (or 15270833 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 61.

The spelling of 84553937881 in words is "eighty-four billion, five hundred fifty-three million, nine hundred thirty-seven thousand, eight hundred eighty-one".