70813772370 has 128 divisors (see below), whose sum is σ = 209495808000. Its totient is φ = 16875967680.

The previous prime is 70813772353. The next prime is 70813772371. The reversal of 70813772370 is 7327731807.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (70813772371) 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 63 ways as a sum of consecutive naturals, for example, 26830 + ... + 377289.

It is an arithmetic number, because the mean of its divisors is an integer number (1636686000).

Almost surely, 2^70813772370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70813772370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104747904000).

70813772370 is an abundant number, since it is smaller than the sum of its proper divisors (138682035630).

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

70813772370 is a wasteful number, since it uses less digits than its factorization.

70813772370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404205 (or 404199 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The spelling of 70813772370 in words is "seventy billion, eight hundred thirteen million, seven hundred seventy-two thousand, three hundred seventy".