42919367643643 has 4 divisors (see below), whose sum is σ = 42920397395928. Its totient is φ = 42918337891360.

The previous prime is 42919367643629. The next prime is 42919367643701. The reversal of 42919367643643 is 34634676391924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42919367643643 - 2⁴¹ = 40720344388091 is a prime.

It is a super-2 number, since 2×42919367643643² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42919367643343) 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, 514813621 + ... + 514896982.

It is an arithmetic number, because the mean of its divisors is an integer number (10730099348982).

Almost surely, 2^{42919367643643} is an apocalyptic number.

42919367643643 is a deficient number, since it is larger than the sum of its proper divisors (1029752285).

42919367643643 is a wasteful number, since it uses less digits than its factorization.

42919367643643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029752284.

The product of its digits is 423263232, while the sum is 67.

The spelling of 42919367643643 in words is "forty-two trillion, nine hundred nineteen billion, three hundred sixty-seven million, six hundred forty-three thousand, six hundred forty-three".