84749131481 has 16 divisors (see below), whose sum is σ = 104327528448. Its totient is φ = 67242344400.

The previous prime is 84749131429. The next prime is 84749131531. The reversal of 84749131481 is 18413194748.

It is not a de Polignac number, because 84749131481 - 2¹⁰ = 84749130457 is a prime.

It is a super-2 number, since 2×84749131481² (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 (84749131681) 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, 8485205 + ... + 8495186.

It is an arithmetic number, because the mean of its divisors is an integer number (6520470528).

Almost surely, 2^84749131481 is an apocalyptic number.

It is an amenable number.

84749131481 is a deficient number, since it is larger than the sum of its proper divisors (19578396967).

84749131481 is a wasteful number, since it uses less digits than its factorization.

84749131481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16980452.

The product of its digits is 774144, while the sum is 50.

The spelling of 84749131481 in words is "eighty-four billion, seven hundred forty-nine million, one hundred thirty-one thousand, four hundred eighty-one".