20401442363 has 2 divisors, whose sum is σ = 20401442364. Its totient is φ = 20401442362.

The previous prime is 20401442357. The next prime is 20401442387. The reversal of 20401442363 is 36324410402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20401442363 is a prime.

It is a super-2 number, since 2×20401442363² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20401442563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200721181 + 10200721182.

It is an arithmetic number, because the mean of its divisors is an integer number (10200721182).

Almost surely, 2^20401442363 is an apocalyptic number.

20401442363 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401442363 is an equidigital number, since it uses as much as digits as its factorization.

20401442363 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 20401442363 its reverse (36324410402), we get a palindrome (56725852765).

The spelling of 20401442363 in words is "twenty billion, four hundred one million, four hundred forty-two thousand, three hundred sixty-three".