70245581238 has 448 divisors, whose sum is σ = 206699765760. Its totient is φ = 17416498176.

The previous prime is 70245581233. The next prime is 70245581239. The reversal of 70245581238 is 83218554207.

70245581238 is a `hidden beast` number, since 7 + 0 + 2 + 45 + 581 + 23 + 8 = 666.

It is a super-2 number, since 2×70245581238² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70245581193 and 70245581202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70245581233) by changing a digit.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 115725531 + ... + 115726137.

Almost surely, 2^70245581238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70245581238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103349882880).

70245581238 is an abundant number, since it is smaller than the sum of its proper divisors (136454184522).

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

70245581238 is a wasteful number, since it uses less digits than its factorization.

70245581238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 70245581238 in words is "seventy billion, two hundred forty-five million, five hundred eighty-one thousand, two hundred thirty-eight".