20090633477 has 2 divisors, whose sum is σ = 20090633478. Its totient is φ = 20090633476.

The previous prime is 20090633471. The next prime is 20090633483. The reversal of 20090633477 is 77433609002.

It is a balanced prime because it is at equal distance from previous prime (20090633471) and next prime (20090633483).

It can be written as a sum of positive squares in only one way, i.e., 17099746756 + 2990886721 = 130766^2 + 54689^2 .

It is a cyclic number.

It is not a de Polignac number, because 20090633477 - 2⁸ = 20090633221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20090633471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10045316738 + 10045316739.

It is an arithmetic number, because the mean of its divisors is an integer number (10045316739).

Almost surely, 2^20090633477 is an apocalyptic number.

It is an amenable number.

20090633477 is a deficient number, since it is larger than the sum of its proper divisors (1).

20090633477 is an equidigital number, since it uses as much as digits as its factorization.

20090633477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 41.

The spelling of 20090633477 in words is "twenty billion, ninety million, six hundred thirty-three thousand, four hundred seventy-seven".