42881826688361 has 8 divisors (see below), whose sum is σ = 46969952154120. Its totient is φ = 38967664008448.

The previous prime is 42881826688357. The next prime is 42881826688399. The reversal of 42881826688361 is 16388662818824.

It can be written as a sum of positive squares in 4 ways, for example, as 12728340582400 + 30153486105961 = 3567680^2 + 5491219^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42881826688361 - 2² = 42881826688357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42881826688661) 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, 43490695946 + ... + 43490696931.

It is an arithmetic number, because the mean of its divisors is an integer number (5871244019265).

Almost surely, 2^{42881826688361} is an apocalyptic number.

It is an amenable number.

42881826688361 is a deficient number, since it is larger than the sum of its proper divisors (4088125465759).

42881826688361 is a wasteful number, since it uses less digits than its factorization.

42881826688361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86981392923.

The product of its digits is 339738624, while the sum is 71.

The spelling of 42881826688361 in words is "forty-two trillion, eight hundred eighty-one billion, eight hundred twenty-six million, six hundred eighty-eight thousand, three hundred sixty-one".