70447866720 has 384 divisors, whose sum is σ = 292945185792. Its totient is φ = 13777305600.

The previous prime is 70447866677. The next prime is 70447866751. The reversal of 70447866720 is 2766874407.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 572260 + ... + 684380.

It is an arithmetic number, because the mean of its divisors is an integer number (762878088).

Almost surely, 2^70447866720 is an apocalyptic number.

70447866720 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 70447866720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146472592896).

70447866720 is an abundant number, since it is smaller than the sum of its proper divisors (222497319072).

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

70447866720 is a wasteful number, since it uses less digits than its factorization.

70447866720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112174 (or 112166 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 51.

The spelling of 70447866720 in words is "seventy billion, four hundred forty-seven million, eight hundred sixty-six thousand, seven hundred twenty".