42610663321 has 2 divisors, whose sum is σ = 42610663322. Its totient is φ = 42610663320.

The previous prime is 42610663297. The next prime is 42610663331. The reversal of 42610663321 is 12336601624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38754253321 + 3856410000 = 196861^2 + 62100^2 .

It is a cyclic number.

It is not a de Polignac number, because 42610663321 - 2⁵ = 42610663289 is a prime.

It is a super-2 number, since 2×42610663321² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42610663331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21305331660 + 21305331661.

It is an arithmetic number, because the mean of its divisors is an integer number (21305331661).

Almost surely, 2^42610663321 is an apocalyptic number.

It is an amenable number.

42610663321 is a deficient number, since it is larger than the sum of its proper divisors (1).

42610663321 is an equidigital number, since it uses as much as digits as its factorization.

42610663321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The spelling of 42610663321 in words is "forty-two billion, six hundred ten million, six hundred sixty-three thousand, three hundred twenty-one".