215850140047 has 2 divisors, whose sum is σ = 215850140048. Its totient is φ = 215850140046.

The previous prime is 215850140039. The next prime is 215850140063. The reversal of 215850140047 is 740041058512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215850140047 - 2³ = 215850140039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215850139988 and 215850140015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215850140017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107925070023 + 107925070024.

It is an arithmetic number, because the mean of its divisors is an integer number (107925070024).

Almost surely, 2^215850140047 is an apocalyptic number.

215850140047 is a deficient number, since it is larger than the sum of its proper divisors (1).

215850140047 is an equidigital number, since it uses as much as digits as its factorization.

215850140047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44800, while the sum is 37.

Adding to 215850140047 its reverse (740041058512), we get a palindrome (955891198559).

The spelling of 215850140047 in words is "two hundred fifteen billion, eight hundred fifty million, one hundred forty thousand, forty-seven".