345110021647 has 2 divisors, whose sum is σ = 345110021648. Its totient is φ = 345110021646.

The previous prime is 345110021623. The next prime is 345110021689. The reversal of 345110021647 is 746120011543.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345110021647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345110001647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172555010823 + 172555010824.

It is an arithmetic number, because the mean of its divisors is an integer number (172555010824).

Almost surely, 2^345110021647 is an apocalyptic number.

345110021647 is a deficient number, since it is larger than the sum of its proper divisors (1).

345110021647 is an equidigital number, since it uses as much as digits as its factorization.

345110021647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 345110021647 in words is "three hundred forty-five billion, one hundred ten million, twenty-one thousand, six hundred forty-seven".