70471139194681 has 9 divisors (see below), whose sum is σ = 72232222404973. Its totient is φ = 68751995133280.

The previous prime is 70471139194669. The next prime is 70471139194699. The reversal of 70471139194681 is 18649193117407.

The square root of 70471139194681 is 8394709.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1433984695081 + 69037154499600 = 1197491^2 + 8308860^2 .

It is not a de Polignac number, because 70471139194681 - 2²³ = 70471130806073 is a prime.

It is a super-2 number, since 2×70471139194681² (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 (70471139194601) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 344080695 + ... + 344285443.

Almost surely, 2^{70471139194681} is an apocalyptic number.

70471139194681 is the 8394709-th square number.

70471139194681 is the 4197355-th centered octagonal number.

It is an amenable number.

70471139194681 is a deficient number, since it is larger than the sum of its proper divisors (1761083210292).

70471139194681 is an frugal number, since it uses more digits than its factorization.

70471139194681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409580 (or 204790 counting only the distinct ones).

The product of its (nonzero) digits is 9144576, while the sum is 61.

The spelling of 70471139194681 in words is "seventy trillion, four hundred seventy-one billion, one hundred thirty-nine million, one hundred ninety-four thousand, six hundred eighty-one".