70292143489681 has 3 divisors (see below), whose sum is σ = 70292151873723. Its totient is φ = 70292135105640.

The previous prime is 70292143489663. The next prime is 70292143489697. The reversal of 70292143489681 is 18698434129207.

The square root of 70292143489681 is 8384041.

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.

It can be written as a sum of positive squares in only one way, i.e., 48620511611281 + 21671631878400 = 6972841^2 + 4655280^2 .

It is not a de Polignac number, because 70292143489681 - 2²⁹ = 70291606618769 is a prime.

It is a super-2 number, since 2×70292143489681² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70292143489621) 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, 4192021 + ... + 12576061.

It is an arithmetic number, because the mean of its divisors is an integer number (23430717291241).

Almost surely, 2^{70292143489681} is an apocalyptic number.

70292143489681 is the 8384041-st square number.

70292143489681 is the 4192021-st centered octagonal number.

It is an amenable number.

70292143489681 is a deficient number, since it is larger than the sum of its proper divisors (8384042).

70292143489681 is an frugal number, since it uses more digits than its factorization.

70292143489681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16768082 (or 8384041 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 70292143489681 in words is "seventy trillion, two hundred ninety-two billion, one hundred forty-three million, four hundred eighty-nine thousand, six hundred eighty-one".