42215551013 has 2 divisors, whose sum is σ = 42215551014. Its totient is φ = 42215551012.

The previous prime is 42215550991. The next prime is 42215551069. The reversal of 42215551013 is 31015551224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41860341604 + 355209409 = 204598^2 + 18847^2 .

It is a cyclic number.

It is not a de Polignac number, because 42215551013 - 2⁸ = 42215550757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42215551073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21107775506 + 21107775507.

It is an arithmetic number, because the mean of its divisors is an integer number (21107775507).

Almost surely, 2^42215551013 is an apocalyptic number.

It is an amenable number.

42215551013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42215551013 is an equidigital number, since it uses as much as digits as its factorization.

42215551013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 42215551013 in words is "forty-two billion, two hundred fifteen million, five hundred fifty-one thousand, thirteen".