20026475501 has 2 divisors, whose sum is σ = 20026475502. Its totient is φ = 20026475500.

The previous prime is 20026475489. The next prime is 20026475591. The reversal of 20026475501 is 10557462002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17602390276 + 2424085225 = 132674^2 + 49235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20026475501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20026475591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013237750 + 10013237751.

It is an arithmetic number, because the mean of its divisors is an integer number (10013237751).

Almost surely, 2^20026475501 is an apocalyptic number.

It is an amenable number.

20026475501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20026475501 is an equidigital number, since it uses as much as digits as its factorization.

20026475501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 32.

The spelling of 20026475501 in words is "twenty billion, twenty-six million, four hundred seventy-five thousand, five hundred one".