20401320419 has 2 divisors, whose sum is σ = 20401320420. Its totient is φ = 20401320418.

The previous prime is 20401320397. The next prime is 20401320431. The reversal of 20401320419 is 91402310402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20401320419 - 2²⁴ = 20384543203 is a prime.

It is a super-2 number, since 2×20401320419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20401320019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200660209 + 10200660210.

It is an arithmetic number, because the mean of its divisors is an integer number (10200660210).

Almost surely, 2^20401320419 is an apocalyptic number.

20401320419 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401320419 is an equidigital number, since it uses as much as digits as its factorization.

20401320419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 20401320419 in words is "twenty billion, four hundred one million, three hundred twenty thousand, four hundred nineteen".