70855821568 has 288 divisors, whose sum is σ = 178632518400. Its totient is φ = 27348959232.

The previous prime is 70855821559. The next prime is 70855821583. The reversal of 70855821568 is 86512855807.

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, 122800096 + ... + 122800672.

It is an arithmetic number, because the mean of its divisors is an integer number (620251800).

Almost surely, 2^70855821568 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 70855821568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89316259200).

70855821568 is an abundant number, since it is smaller than the sum of its proper divisors (107776696832).

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

70855821568 is a wasteful number, since it uses less digits than its factorization.

70855821568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 55.

The spelling of 70855821568 in words is "seventy billion, eight hundred fifty-five million, eight hundred twenty-one thousand, five hundred sixty-eight".