70155565560 has 256 divisors, whose sum is σ = 243797299200. Its totient is φ = 17924544000.

The previous prime is 70155565549. The next prime is 70155565567. The reversal of 70155565560 is 6556555107.

70155565560 is a `hidden beast` number, since 70 + 15 + 5 + 5 + 6 + 5 + 560 = 666.

It is a super-3 number, since 3×70155565560³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70155565567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3371107 + ... + 3391853.

It is an arithmetic number, because the mean of its divisors is an integer number (952333200).

Almost surely, 2^70155565560 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 70155565560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121898649600).

70155565560 is an abundant number, since it is smaller than the sum of its proper divisors (173641733640).

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

70155565560 is a wasteful number, since it uses less digits than its factorization.

70155565560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20899 (or 20889 counting only the distinct ones).

The product of its (nonzero) digits is 787500, while the sum is 45.

The spelling of 70155565560 in words is "seventy billion, one hundred fifty-five million, five hundred sixty-five thousand, five hundred sixty".