20121792541 has 2 divisors, whose sum is σ = 20121792542. Its totient is φ = 20121792540.

The previous prime is 20121792517. The next prime is 20121792553. The reversal of 20121792541 is 14529712102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13125139225 + 6996653316 = 114565^2 + 83646^2 .

It is a cyclic number.

It is not a de Polignac number, because 20121792541 - 2⁷ = 20121792413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20121792497 and 20121792506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121702541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060896270 + 10060896271.

It is an arithmetic number, because the mean of its divisors is an integer number (10060896271).

Almost surely, 2^20121792541 is an apocalyptic number.

It is an amenable number.

20121792541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121792541 is an equidigital number, since it uses as much as digits as its factorization.

20121792541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 20121792541 in words is "twenty billion, one hundred twenty-one million, seven hundred ninety-two thousand, five hundred forty-one".