70616521165 has 8 divisors (see below), whose sum is σ = 85900645368. Its totient is φ = 55719336960.

The previous prime is 70616521147. The next prime is 70616521169. The reversal of 70616521165 is 56112561607.

It can be written as a sum of positive squares in 4 ways, for example, as 165559689 + 70450961476 = 12867^2 + 265426^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70616521165 - 2¹⁷ = 70616390093 is a prime.

It is a super-2 number, since 2×70616521165² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70616521169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96734596 + ... + 96735325.

It is an arithmetic number, because the mean of its divisors is an integer number (10737580671).

Almost surely, 2^70616521165 is an apocalyptic number.

It is an amenable number.

70616521165 is a deficient number, since it is larger than the sum of its proper divisors (15284124203).

70616521165 is a wasteful number, since it uses less digits than its factorization.

70616521165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193469999.

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 70616521165 in words is "seventy billion, six hundred sixteen million, five hundred twenty-one thousand, one hundred sixty-five".