70561065600 has 384 divisors, whose sum is σ = 264545568000. Its totient is φ = 18356428800.

The previous prime is 70561065593. The next prime is 70561065649. The reversal of 70561065600 is 656016507.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 3532441 + ... + 3552359.

It is an arithmetic number, because the mean of its divisors is an integer number (688920750).

Almost surely, 2^70561065600 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 70561065600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132272784000).

70561065600 is an abundant number, since it is smaller than the sum of its proper divisors (193984502400).

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

70561065600 is a wasteful number, since it uses less digits than its factorization.

70561065600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19993 (or 19970 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 70561065600 in words is "seventy billion, five hundred sixty-one million, sixty-five thousand, six hundred".