34457815681 has 4 divisors (see below), whose sum is σ = 34677292372. Its totient is φ = 34238338992.

The previous prime is 34457815669. The next prime is 34457815687. The reversal of 34457815681 is 18651875443.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10283785281 + 24174030400 = 101409^2 + 155480^2 .

It is a cyclic number.

It is not a de Polignac number, because 34457815681 - 2²³ = 34449427073 is a prime.

It is a super-2 number, since 2×34457815681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34457815687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109738110 + ... + 109738423.

It is an arithmetic number, because the mean of its divisors is an integer number (8669323093).

Almost surely, 2^34457815681 is an apocalyptic number.

It is an amenable number.

34457815681 is a deficient number, since it is larger than the sum of its proper divisors (219476691).

34457815681 is a wasteful number, since it uses less digits than its factorization.

34457815681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219476690.

The product of its digits is 3225600, while the sum is 52.

The spelling of 34457815681 in words is "thirty-four billion, four hundred fifty-seven million, eight hundred fifteen thousand, six hundred eighty-one".