21601630674307 has 2 divisors, whose sum is σ = 21601630674308. Its totient is φ = 21601630674306.

The previous prime is 21601630674277. The next prime is 21601630674391. The reversal of 21601630674307 is 70347603610612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21601630674307 is a prime.

It is a super-2 number, since 2×21601630674307² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21602630674307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10800815337153 + 10800815337154.

It is an arithmetic number, because the mean of its divisors is an integer number (10800815337154).

Almost surely, 2^{21601630674307} is an apocalyptic number.

21601630674307 is a deficient number, since it is larger than the sum of its proper divisors (1).

21601630674307 is an equidigital number, since it uses as much as digits as its factorization.

21601630674307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 762048, while the sum is 46.

The spelling of 21601630674307 in words is "twenty-one trillion, six hundred one billion, six hundred thirty million, six hundred seventy-four thousand, three hundred seven".