84653972540 has 24 divisors (see below), whose sum is σ = 179915193360. Its totient is φ = 33453617408.

The previous prime is 84653972527. The next prime is 84653972549. The reversal of 84653972540 is 4527935648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84653972549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25496525 + ... + 25499844.

It is an arithmetic number, because the mean of its divisors is an integer number (7496466390).

Almost surely, 2^84653972540 is an apocalyptic number.

It is an amenable number.

84653972540 is an abundant number, since it is smaller than the sum of its proper divisors (95261220820).

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

84653972540 is a wasteful number, since it uses less digits than its factorization.

84653972540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50996461 (or 50996459 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 84653972540 in words is "eighty-four billion, six hundred fifty-three million, nine hundred seventy-two thousand, five hundred forty".