70665110880 has 576 divisors, whose sum is σ = 280311736320. Its totient is φ = 14831824896.

The previous prime is 70665110843. The next prime is 70665110881. The reversal of 70665110880 is 8801156607.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70665110881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73076157 + ... + 73077123.

It is an arithmetic number, because the mean of its divisors is an integer number (486652320).

Almost surely, 2^70665110880 is an apocalyptic number.

70665110880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70665110880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140155868160).

70665110880 is an abundant number, since it is smaller than the sum of its proper divisors (209646625440).

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

70665110880 is a wasteful number, since it uses less digits than its factorization.

70665110880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1236 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The spelling of 70665110880 in words is "seventy billion, six hundred sixty-five million, one hundred ten thousand, eight hundred eighty".