215420210039 has 2 divisors, whose sum is σ = 215420210040. Its totient is φ = 215420210038.

The previous prime is 215420209999. The next prime is 215420210183. The reversal of 215420210039 is 930012024512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215420210039 - 2²⁸ = 215151774583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215420209993 and 215420210020.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215420219039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107710105019 + 107710105020.

It is an arithmetic number, because the mean of its divisors is an integer number (107710105020).

Almost surely, 2^215420210039 is an apocalyptic number.

215420210039 is a deficient number, since it is larger than the sum of its proper divisors (1).

215420210039 is an equidigital number, since it uses as much as digits as its factorization.

215420210039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 215420210039 in words is "two hundred fifteen billion, four hundred twenty million, two hundred ten thousand, thirty-nine".