21072630071 has 2 divisors, whose sum is σ = 21072630072. Its totient is φ = 21072630070.

The previous prime is 21072629993. The next prime is 21072630101. The reversal of 21072630071 is 17003627012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21072630071 - 2¹⁰ = 21072629047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21072638071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10536315035 + 10536315036.

It is an arithmetic number, because the mean of its divisors is an integer number (10536315036).

Almost surely, 2^21072630071 is an apocalyptic number.

21072630071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21072630071 is an equidigital number, since it uses as much as digits as its factorization.

21072630071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The spelling of 21072630071 in words is "twenty-one billion, seventy-two million, six hundred thirty thousand, seventy-one".