84012544549 has 16 divisors (see below), whose sum is σ = 90008582400. Its totient is φ = 78184177344.

The previous prime is 84012544541. The next prime is 84012544559. The reversal of 84012544549 is 94544521048.

It is a cyclic number.

It is not a de Polignac number, because 84012544549 - 2³ = 84012544541 is a prime.

It is a super-2 number, since 2×84012544549² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84012544499 and 84012544508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84012544541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153639 + ... + 437755.

It is an arithmetic number, because the mean of its divisors is an integer number (5625536400).

Almost surely, 2^84012544549 is an apocalyptic number.

It is an amenable number.

84012544549 is a deficient number, since it is larger than the sum of its proper divisors (5996037851).

84012544549 is a wasteful number, since it uses less digits than its factorization.

84012544549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284412.

The product of its (nonzero) digits is 921600, while the sum is 46.

The spelling of 84012544549 in words is "eighty-four billion, twelve million, five hundred forty-four thousand, five hundred forty-nine".