20274123379 has 2 divisors, whose sum is σ = 20274123380. Its totient is φ = 20274123378.

The previous prime is 20274123307. The next prime is 20274123407. The reversal of 20274123379 is 97332147202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20274123379 - 2⁹ = 20274122867 is a prime.

It is a super-2 number, since 2×20274123379² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20274123179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10137061689 + 10137061690.

It is an arithmetic number, because the mean of its divisors is an integer number (10137061690).

Almost surely, 2^20274123379 is an apocalyptic number.

20274123379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20274123379 is an equidigital number, since it uses as much as digits as its factorization.

20274123379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 20274123379 in words is "twenty billion, two hundred seventy-four million, one hundred twenty-three thousand, three hundred seventy-nine".