21070653370411 has 2 divisors, whose sum is σ = 21070653370412. Its totient is φ = 21070653370410.

The previous prime is 21070653370397. The next prime is 21070653370439. The reversal of 21070653370411 is 11407335607012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21070653370411 is a prime.

It is not a weakly prime, because it can be changed into another prime (21070653470411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10535326685205 + 10535326685206.

It is an arithmetic number, because the mean of its divisors is an integer number (10535326685206).

Almost surely, 2^{21070653370411} is an apocalyptic number.

21070653370411 is a deficient number, since it is larger than the sum of its proper divisors (1).

21070653370411 is an equidigital number, since it uses as much as digits as its factorization.

21070653370411 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 40.

Adding to 21070653370411 its reverse (11407335607012), we get a palindrome (32477988977423).

The spelling of 21070653370411 in words is "twenty-one trillion, seventy billion, six hundred fifty-three million, three hundred seventy thousand, four hundred eleven".