42935394661 has 4 divisors (see below), whose sum is σ = 44320407424. Its totient is φ = 41550381900.

The previous prime is 42935394653. The next prime is 42935394673. The reversal of 42935394661 is 16649353924.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42935394661 - 2³ = 42935394653 is a prime.

It is a super-2 number, since 2×42935394661² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42935394599 and 42935394608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42935394631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 692506335 + ... + 692506396.

It is an arithmetic number, because the mean of its divisors is an integer number (11080101856).

Almost surely, 2^42935394661 is an apocalyptic number.

It is an amenable number.

42935394661 is a deficient number, since it is larger than the sum of its proper divisors (1385012763).

42935394661 is a wasteful number, since it uses less digits than its factorization.

42935394661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385012762.

The product of its digits is 4199040, while the sum is 52.

The spelling of 42935394661 in words is "forty-two billion, nine hundred thirty-five million, three hundred ninety-four thousand, six hundred sixty-one".