70721277120 has 896 divisors, whose sum is σ = 292217856000. Its totient is φ = 15945154560.

The previous prime is 70721277119. The next prime is 70721277169. The reversal of 70721277120 is 2177212707.

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 127 ways as a sum of consecutive naturals, for example, 66155946 + ... + 66157014.

It is an arithmetic number, because the mean of its divisors is an integer number (326136000).

Almost surely, 2^70721277120 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 70721277120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146108928000).

70721277120 is an abundant number, since it is smaller than the sum of its proper divisors (221496578880).

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

70721277120 is a wasteful number, since it uses less digits than its factorization.

70721277120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 19208, while the sum is 36.

Adding to 70721277120 its reverse (2177212707), we get a palindrome (72898489827).

The spelling of 70721277120 in words is "seventy billion, seven hundred twenty-one million, two hundred seventy-seven thousand, one hundred twenty".