42846815641 has 12 divisors (see below), whose sum is σ = 49847578212. Its totient is φ = 36721889568.

The previous prime is 42846815617. The next prime is 42846815677. The reversal of 42846815641 is 14651864824.

It can be written as a sum of positive squares in 2 ways, for example, as 19016410000 + 23830405641 = 137900^2 + 154371^2 .

It is not a de Polignac number, because 42846815641 - 2²¹ = 42844718489 is a prime.

It is a super-2 number, since 2×42846815641² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42846815611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 470371 + ... + 554023.

It is an arithmetic number, because the mean of its divisors is an integer number (4153964851).

Almost surely, 2^42846815641 is an apocalyptic number.

It is an amenable number.

42846815641 is a deficient number, since it is larger than the sum of its proper divisors (7000762571).

42846815641 is a wasteful number, since it uses less digits than its factorization.

42846815641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94120 (or 94113 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The spelling of 42846815641 in words is "forty-two billion, eight hundred forty-six million, eight hundred fifteen thousand, six hundred forty-one".