20078972659 has 2 divisors, whose sum is σ = 20078972660. Its totient is φ = 20078972658.

The previous prime is 20078972647. The next prime is 20078972671. The reversal of 20078972659 is 95627987002.

It is a balanced prime because it is at equal distance from previous prime (20078972647) and next prime (20078972671).

It is a cyclic number.

It is not a de Polignac number, because 20078972659 - 2¹⁹ = 20078448371 is a prime.

It is not a weakly prime, because it can be changed into another prime (20078972059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10039486329 + 10039486330.

It is an arithmetic number, because the mean of its divisors is an integer number (10039486330).

Almost surely, 2^20078972659 is an apocalyptic number.

20078972659 is a deficient number, since it is larger than the sum of its proper divisors (1).

20078972659 is an equidigital number, since it uses as much as digits as its factorization.

20078972659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 55.

The spelling of 20078972659 in words is "twenty billion, seventy-eight million, nine hundred seventy-two thousand, six hundred fifty-nine".