339656421566 has 16 divisors (see below), whose sum is σ = 635201619840. Its totient is φ = 132333670680.

The previous prime is 339656421563. The next prime is 339656421617. The reversal of 339656421566 is 665124656933.

It is a super-2 number, since 2×339656421566² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (339656421563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1102780436 + ... + 1102780743.

It is an arithmetic number, because the mean of its divisors is an integer number (39700101240).

Almost surely, 2^339656421566 is an apocalyptic number.

339656421566 is a deficient number, since it is larger than the sum of its proper divisors (295545198274).

339656421566 is a wasteful number, since it uses less digits than its factorization.

339656421566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205561199.

The product of its digits is 20995200, while the sum is 56.

The spelling of 339656421566 in words is "three hundred thirty-nine billion, six hundred fifty-six million, four hundred twenty-one thousand, five hundred sixty-six".