84054502381 has 6 divisors (see below), whose sum is σ = 89289731210. Its totient is φ = 79110119616.

The previous prime is 84054502351. The next prime is 84054502447. The reversal of 84054502381 is 18320545048.

It can be written as a sum of positive squares in 3 ways, for example, as 38273053225 + 45781449156 = 195635^2 + 213966^2 .

It is not a de Polignac number, because 84054502381 - 2¹¹ = 84054500333 is a prime.

It is a super-2 number, since 2×84054502381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84054502351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145422726 + ... + 145423303.

Almost surely, 2^84054502381 is an apocalyptic number.

It is an amenable number.

84054502381 is a deficient number, since it is larger than the sum of its proper divisors (5235228829).

84054502381 is a wasteful number, since it uses less digits than its factorization.

84054502381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290846063 (or 290846046 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 84054502381 in words is "eighty-four billion, fifty-four million, five hundred two thousand, three hundred eighty-one".