70566861450 has 192 divisors, whose sum is σ = 194016332160. Its totient is φ = 16892682240.

The previous prime is 70566861397. The next prime is 70566861457. The reversal of 70566861450 is 5416866507.

It is a super-2 number, since 2×70566861450² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70566861450.

It is not an unprimeable number, because it can be changed into a prime (70566861457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6132102 + ... + 6143598.

It is an arithmetic number, because the mean of its divisors is an integer number (1010501730).

Almost surely, 2^70566861450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70566861450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97008166080).

70566861450 is an abundant number, since it is smaller than the sum of its proper divisors (123449470710).

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

70566861450 is a wasteful number, since it uses less digits than its factorization.

70566861450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11641 (or 11636 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 70566861450 in words is "seventy billion, five hundred sixty-six million, eight hundred sixty-one thousand, four hundred fifty".