219140790251 has 2 divisors, whose sum is σ = 219140790252. Its totient is φ = 219140790250.

The previous prime is 219140790173. The next prime is 219140790289. The reversal of 219140790251 is 152097041912.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219140790251 - 2¹⁸ = 219140528107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 219140790199 and 219140790208.

It is not a weakly prime, because it can be changed into another prime (219140790151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109570395125 + 109570395126.

It is an arithmetic number, because the mean of its divisors is an integer number (109570395126).

Almost surely, 2^219140790251 is an apocalyptic number.

219140790251 is a deficient number, since it is larger than the sum of its proper divisors (1).

219140790251 is an equidigital number, since it uses as much as digits as its factorization.

219140790251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 41.

The spelling of 219140790251 in words is "two hundred nineteen billion, one hundred forty million, seven hundred ninety thousand, two hundred fifty-one".