70563999872 has 64 divisors (see below), whose sum is σ = 143322566400. Its totient is φ = 34593721344.

The previous prime is 70563999833. The next prime is 70563999917. The reversal of 70563999872 is 27899936507.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×70563999872³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70563999799 and 70563999808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15865553 + ... + 15869999.

It is an arithmetic number, because the mean of its divisors is an integer number (2239415100).

Almost surely, 2^70563999872 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 70563999872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71661283200).

70563999872 is an abundant number, since it is smaller than the sum of its proper divisors (72758566528).

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

70563999872 is a wasteful number, since it uses less digits than its factorization.

70563999872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6853 (or 6841 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 65.

The spelling of 70563999872 in words is "seventy billion, five hundred sixty-three million, nine hundred ninety-nine thousand, eight hundred seventy-two".