356420643889 has 4 divisors (see below), whose sum is σ = 356424296256. Its totient is φ = 356416991524.

The previous prime is 356420643857. The next prime is 356420643907. The reversal of 356420643889 is 988346024653.

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 a cyclic number.

It is not a de Polignac number, because 356420643889 - 2⁵ = 356420643857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (356420643289) 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, 1675669 + ... + 1876354.

It is an arithmetic number, because the mean of its divisors is an integer number (89106074064).

Almost surely, 2^356420643889 is an apocalyptic number.

It is an amenable number.

356420643889 is a deficient number, since it is larger than the sum of its proper divisors (3652367).

356420643889 is a wasteful number, since it uses less digits than its factorization.

356420643889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652366.

The product of its (nonzero) digits is 29859840, while the sum is 58.

The spelling of 356420643889 in words is "three hundred fifty-six billion, four hundred twenty million, six hundred forty-three thousand, eight hundred eighty-nine".