70521165197 has 12 divisors (see below), whose sum is σ = 82354041180. Its totient is φ = 60211501056.

The previous prime is 70521165167. The next prime is 70521165217. The reversal of 70521165197 is 79156112507.

It can be written as a sum of positive squares in 2 ways, for example, as 64222203241 + 6298961956 = 253421^2 + 79366^2 .

It is not a de Polignac number, because 70521165197 - 2⁶ = 70521165133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70521165107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2787422 + ... + 2812607.

It is an arithmetic number, because the mean of its divisors is an integer number (6862836765).

Almost surely, 2^70521165197 is an apocalyptic number.

It is an amenable number.

70521165197 is a deficient number, since it is larger than the sum of its proper divisors (11832875983).

70521165197 is a wasteful number, since it uses less digits than its factorization.

70521165197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600300 (or 5600293 counting only the distinct ones).

The product of its (nonzero) digits is 132300, while the sum is 44.

The spelling of 70521165197 in words is "seventy billion, five hundred twenty-one million, one hundred sixty-five thousand, one hundred ninety-seven".