1620968233607 has 2 divisors, whose sum is σ = 1620968233608. Its totient is φ = 1620968233606.

The previous prime is 1620968233601. The next prime is 1620968233649. The reversal of 1620968233607 is 7063328690261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1620968233607 - 2⁸ = 1620968233351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1620968233601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810484116803 + 810484116804.

It is an arithmetic number, because the mean of its divisors is an integer number (810484116804).

Almost surely, 2^{1620968233607} is an apocalyptic number.

1620968233607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1620968233607 is an equidigital number, since it uses as much as digits as its factorization.

1620968233607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The spelling of 1620968233607 in words is "one trillion, six hundred twenty billion, nine hundred sixty-eight million, two hundred thirty-three thousand, six hundred seven".