42813403961 has 4 divisors (see below), whose sum is σ = 42823767012. Its totient is φ = 42803040912.

The previous prime is 42813403933. The next prime is 42813403967. The reversal of 42813403961 is 16930431824.

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 36986982400 + 5826421561 = 192320^2 + 76331^2 .

It is a cyclic number.

It is not a de Polignac number, because 42813403961 - 2¹⁰ = 42813402937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42813403967) 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, 5175326 + ... + 5183591.

It is an arithmetic number, because the mean of its divisors is an integer number (10705941753).

Almost surely, 2^42813403961 is an apocalyptic number.

It is an amenable number.

42813403961 is a deficient number, since it is larger than the sum of its proper divisors (10363051).

42813403961 is a wasteful number, since it uses less digits than its factorization.

42813403961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363050.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 42813403961 in words is "forty-two billion, eight hundred thirteen million, four hundred three thousand, nine hundred sixty-one".