84487977612 has 60 divisors (see below), whose sum is σ = 233860528440. Its totient is φ = 26506030464.

The previous prime is 84487977589. The next prime is 84487977617. The reversal of 84487977612 is 21677978448.

84487977612 is a `hidden beast` number, since 8 + 4 + 4 + 8 + 7 + 9 + 7 + 7 + 612 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 84487977612.

It is not an unprimeable number, because it can be changed into a prime (84487977617) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7664062 + ... + 7675077.

It is an arithmetic number, because the mean of its divisors is an integer number (3897675474).

Almost surely, 2^84487977612 is an apocalyptic number.

It is an amenable number.

84487977612 is an abundant number, since it is smaller than the sum of its proper divisors (149372550828).

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

84487977612 is a wasteful number, since it uses less digits than its factorization.

84487977612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15339172 (or 15339161 counting only the distinct ones).

The product of its digits is 37933056, while the sum is 63.

The spelling of 84487977612 in words is "eighty-four billion, four hundred eighty-seven million, nine hundred seventy-seven thousand, six hundred twelve".