70688452129 has 3 divisors (see below), whose sum is σ = 70688718003. Its totient is φ = 70688186256.

The previous prime is 70688452123. The next prime is 70688452147. The reversal of 70688452129 is 92125488607.

The square root of 70688452129 is 265873.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92125488607 = 179083 ⋅514429.

It can be written as a sum of positive squares in only one way, i.e., 67842016225 + 2846435904 = 260465^2 + 53352^2 .

It is not a de Polignac number, because 70688452129 - 2⁷ = 70688452001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70688452123) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 132937 + ... + 398809.

It is an arithmetic number, because the mean of its divisors is an integer number (23562906001).

Almost surely, 2^70688452129 is an apocalyptic number.

70688452129 is the 265873-rd square number.

70688452129 is the 132937-th centered octagonal number.

It is an amenable number.

70688452129 is a deficient number, since it is larger than the sum of its proper divisors (265874).

70688452129 is an frugal number, since it uses more digits than its factorization.

70688452129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531746 (or 265873 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 70688452129 in words is "seventy billion, six hundred eighty-eight million, four hundred fifty-two thousand, one hundred twenty-nine".