84923837639640 has 192 divisors, whose sum is σ = 278765844870240. Its totient is φ = 22419667814400.

The previous prime is 84923837639621. The next prime is 84923837639723. The reversal of 84923837639640 is 4693673832948.

84923837639640 is a `hidden beast` number, since 8 + 4 + 92 + 3 + 83 + 76 + 396 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 342860079 + ... + 343107681.

Almost surely, 2^{84923837639640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84923837639640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139382922435120).

84923837639640 is an abundant number, since it is smaller than the sum of its proper divisors (193842007230600).

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

84923837639640 is a wasteful number, since it uses less digits than its factorization.

84923837639640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257154 (or 257147 counting only the distinct ones).

The product of its (nonzero) digits is 1128701952, while the sum is 72.

The spelling of 84923837639640 in words is "eighty-four trillion, nine hundred twenty-three billion, eight hundred thirty-seven million, six hundred thirty-nine thousand, six hundred forty".