84656730540 has 48 divisors (see below), whose sum is σ = 237095294688. Its totient is φ = 22569752064.

The previous prime is 84656730539. The next prime is 84656730541. The reversal of 84656730540 is 4503765648.

It is an interprime number because it is at equal distance from previous prime (84656730539) and next prime (84656730541).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 84656730540.

It is not an unprimeable number, because it can be changed into a prime (84656730541) 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, 89304 + ... + 421056.

It is an arithmetic number, because the mean of its divisors is an integer number (4939485306).

Almost surely, 2^84656730540 is an apocalyptic number.

It is an amenable number.

84656730540 is an abundant number, since it is smaller than the sum of its proper divisors (152438564148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84656730540 is a wasteful number, since it uses less digits than its factorization.

84656730540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336018 (or 336016 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 84656730540 in words is "eighty-four billion, six hundred fifty-six million, seven hundred thirty thousand, five hundred forty".