21039076270061 has 2 divisors, whose sum is σ = 21039076270062. Its totient is φ = 21039076270060.

The previous prime is 21039076270057. The next prime is 21039076270109. The reversal of 21039076270061 is 16007267093012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14564565486025 + 6474510784036 = 3816355^2 + 2544506^2 .

It is a cyclic number.

It is not a de Polignac number, because 21039076270061 - 2² = 21039076270057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21039076269994 and 21039076270021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21039076270361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10519538135030 + 10519538135031.

It is an arithmetic number, because the mean of its divisors is an integer number (10519538135031).

Almost surely, 2^{21039076270061} is an apocalyptic number.

It is an amenable number.

21039076270061 is a deficient number, since it is larger than the sum of its proper divisors (1).

21039076270061 is an equidigital number, since it uses as much as digits as its factorization.

21039076270061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 21039076270061 in words is "twenty-one trillion, thirty-nine billion, seventy-six million, two hundred seventy thousand, sixty-one".