838877065304640 has 224 divisors, whose sum is σ = 2665535627658240. Its totient is φ = 223524123303936.

The previous prime is 838877065304563. The next prime is 838877065304689. The reversal of 838877065304640 is 46403560778838.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19612282294 + ... + 19612325066.

Almost surely, 2^{838877065304640} is an apocalyptic number.

838877065304640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 838877065304640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1332767813829120).

838877065304640 is an abundant number, since it is smaller than the sum of its proper divisors (1826658562353600).

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

838877065304640 is a wasteful number, since it uses less digits than its factorization.

838877065304640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58429 (or 58419 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 69.

The spelling of 838877065304640 in words is "eight hundred thirty-eight trillion, eight hundred seventy-seven billion, sixty-five million, three hundred four thousand, six hundred forty".