20401123373 has 2 divisors, whose sum is σ = 20401123374. Its totient is φ = 20401123372.

The previous prime is 20401123331. The next prime is 20401123399. The reversal of 20401123373 is 37332110402.

It is an a-pointer prime, because the next prime (20401123399) can be obtained adding 20401123373 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14982249604 + 5418873769 = 122402^2 + 73613^2 .

It is a cyclic number.

It is not a de Polignac number, because 20401123373 - 2⁸ = 20401123117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20401128373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200561686 + 10200561687.

It is an arithmetic number, because the mean of its divisors is an integer number (10200561687).

Almost surely, 2^20401123373 is an apocalyptic number.

It is an amenable number.

20401123373 is a deficient number, since it is larger than the sum of its proper divisors (1).

20401123373 is an equidigital number, since it uses as much as digits as its factorization.

20401123373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

Adding to 20401123373 its reverse (37332110402), we get a palindrome (57733233775).

The spelling of 20401123373 in words is "twenty billion, four hundred one million, one hundred twenty-three thousand, three hundred seventy-three".