20477032493 has 2 divisors, whose sum is σ = 20477032494. Its totient is φ = 20477032492.

The previous prime is 20477032483. The next prime is 20477032529. The reversal of 20477032493 is 39423077402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14188859689 + 6288172804 = 119117^2 + 79298^2 .

It is a cyclic number.

It is not a de Polignac number, because 20477032493 - 2¹⁰ = 20477031469 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20477032493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20477032453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10238516246 + 10238516247.

It is an arithmetic number, because the mean of its divisors is an integer number (10238516247).

Almost surely, 2^20477032493 is an apocalyptic number.

It is an amenable number.

20477032493 is a deficient number, since it is larger than the sum of its proper divisors (1).

20477032493 is an equidigital number, since it uses as much as digits as its factorization.

20477032493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 41.

The spelling of 20477032493 in words is "twenty billion, four hundred seventy-seven million, thirty-two thousand, four hundred ninety-three".