42981814445 has 8 divisors (see below), whose sum is σ = 51579542040. Its totient is φ = 34384541760.

The previous prime is 42981814429. The next prime is 42981814453. The reversal of 42981814445 is 54441818924.

It can be written as a sum of positive squares in 4 ways, for example, as 645871396 + 42335943049 = 25414^2 + 205757^2 .

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

It is not a de Polignac number, because 42981814445 - 2⁴ = 42981814429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42981814393 and 42981814402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149555 + ... + 329135.

It is an arithmetic number, because the mean of its divisors is an integer number (6447442755).

Almost surely, 2^42981814445 is an apocalyptic number.

It is an amenable number.

42981814445 is a deficient number, since it is larger than the sum of its proper divisors (8597727595).

42981814445 is a wasteful number, since it uses less digits than its factorization.

42981814445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227455.

The product of its digits is 1474560, while the sum is 50.

The spelling of 42981814445 in words is "forty-two billion, nine hundred eighty-one million, eight hundred fourteen thousand, four hundred forty-five".