20055400007 has 2 divisors, whose sum is σ = 20055400008. Its totient is φ = 20055400006.

The previous prime is 20055400003. The next prime is 20055400061. The reversal of 20055400007 is 70000455002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20055400007 - 2² = 20055400003 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20055400003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10027700003 + 10027700004.

It is an arithmetic number, because the mean of its divisors is an integer number (10027700004).

Almost surely, 2^20055400007 is an apocalyptic number.

20055400007 is a deficient number, since it is larger than the sum of its proper divisors (1).

20055400007 is an equidigital number, since it uses as much as digits as its factorization.

20055400007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1400, while the sum is 23.

Adding to 20055400007 its reverse (70000455002), we get a palindrome (90055855009).

The spelling of 20055400007 in words is "twenty billion, fifty-five million, four hundred thousand, seven".