20210551379 has 2 divisors, whose sum is σ = 20210551380. Its totient is φ = 20210551378.

The previous prime is 20210551349. The next prime is 20210551391. The reversal of 20210551379 is 97315501202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20210551379 - 2¹² = 20210547283 is a prime.

It is not a weakly prime, because it can be changed into another prime (20210551349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105275689 + 10105275690.

It is an arithmetic number, because the mean of its divisors is an integer number (10105275690).

Almost surely, 2^20210551379 is an apocalyptic number.

20210551379 is a deficient number, since it is larger than the sum of its proper divisors (1).

20210551379 is an equidigital number, since it uses as much as digits as its factorization.

20210551379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 35.

The spelling of 20210551379 in words is "twenty billion, two hundred ten million, five hundred fifty-one thousand, three hundred seventy-nine".