878053006638 has 12 divisors (see below), whose sum is σ = 1902448181088. Its totient is φ = 292684335540.

The previous prime is 878053006553. The next prime is 878053006673. The reversal of 878053006638 is 836600350878.

It is a happy number.

878053006638 is a `hidden beast` number, since 8 + 78 + 0 + 530 + 0 + 6 + 6 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24390361278 + ... + 24390361313.

It is an arithmetic number, because the mean of its divisors is an integer number (158537348424).

Almost surely, 2^878053006638 is an apocalyptic number.

878053006638 is an abundant number, since it is smaller than the sum of its proper divisors (1024395174450).

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

878053006638 is a wasteful number, since it uses less digits than its factorization.

878053006638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48780722599 (or 48780722596 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 878053006638 in words is "eight hundred seventy-eight billion, fifty-three million, six thousand, six hundred thirty-eight".