20549377124503 has 2 divisors, whose sum is σ = 20549377124504. Its totient is φ = 20549377124502.

The previous prime is 20549377124459. The next prime is 20549377124657. The reversal of 20549377124503 is 30542177394502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20549377124503 - 2³³ = 20540787189911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20549377124803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10274688562251 + 10274688562252.

It is an arithmetic number, because the mean of its divisors is an integer number (10274688562252).

Almost surely, 2^{20549377124503} is an apocalyptic number.

20549377124503 is a deficient number, since it is larger than the sum of its proper divisors (1).

20549377124503 is an equidigital number, since it uses as much as digits as its factorization.

20549377124503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6350400, while the sum is 52.

The spelling of 20549377124503 in words is "twenty trillion, five hundred forty-nine billion, three hundred seventy-seven million, one hundred twenty-four thousand, five hundred three".