699221443079 has 2 divisors, whose sum is σ = 699221443080. Its totient is φ = 699221443078.

The previous prime is 699221443073. The next prime is 699221443121. The reversal of 699221443079 is 970344122996.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 699221443079 - 2³² = 694926475783 is a prime.

It is a super-2 number, since 2×699221443079² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (699221443073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349610721539 + 349610721540.

It is an arithmetic number, because the mean of its divisors is an integer number (349610721540).

Almost surely, 2^699221443079 is an apocalyptic number.

699221443079 is a deficient number, since it is larger than the sum of its proper divisors (1).

699221443079 is an equidigital number, since it uses as much as digits as its factorization.

699221443079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 699221443079 in words is "six hundred ninety-nine billion, two hundred twenty-one million, four hundred forty-three thousand, seventy-nine".