890078520607 has 2 divisors, whose sum is σ = 890078520608. Its totient is φ = 890078520606.

The previous prime is 890078520587. The next prime is 890078520659. The reversal of 890078520607 is 706025870098.

It is an a-pointer prime, because the next prime (890078520659) can be obtained adding 890078520607 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-890078520607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (890078527607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445039260303 + 445039260304.

It is an arithmetic number, because the mean of its divisors is an integer number (445039260304).

Almost surely, 2^890078520607 is an apocalyptic number.

890078520607 is a deficient number, since it is larger than the sum of its proper divisors (1).

890078520607 is an equidigital number, since it uses as much as digits as its factorization.

890078520607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 890078520607 in words is "eight hundred ninety billion, seventy-eight million, five hundred twenty thousand, six hundred seven".