7021057809043 has 4 divisors (see below), whose sum is σ = 7025443230888. Its totient is φ = 7016672387200.

The previous prime is 7021057809037. The next prime is 7021057809047. The reversal of 7021057809043 is 3409087501207.

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 7021057809043 - 2¹⁷ = 7021057677971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7021057808984 and 7021057809002.

It is not an unprimeable number, because it can be changed into a prime (7021057809047) 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, 2192708521 + ... + 2192711722.

It is an arithmetic number, because the mean of its divisors is an integer number (1756360807722).

Almost surely, 2^{7021057809043} is an apocalyptic number.

7021057809043 is a deficient number, since it is larger than the sum of its proper divisors (4385421845).

7021057809043 is a wasteful number, since it uses less digits than its factorization.

7021057809043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4385421844.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 7021057809043 in words is "seven trillion, twenty-one billion, fifty-seven million, eight hundred nine thousand, forty-three".