427320137544737 has 2 divisors, whose sum is σ = 427320137544738. Its totient is φ = 427320137544736.

The previous prime is 427320137544721. The next prime is 427320137544757. The reversal of 427320137544737 is 737445731023724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 333193584395281 + 94126553149456 = 18253591^2 + 9701884^2 .

It is a cyclic number.

It is not a de Polignac number, because 427320137544737 - 2⁴ = 427320137544721 is a prime.

It is not a weakly prime, because it can be changed into another prime (427320137544757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213660068772368 + 213660068772369.

It is an arithmetic number, because the mean of its divisors is an integer number (213660068772369).

Almost surely, 2^{427320137544737} is an apocalyptic number.

It is an amenable number.

427320137544737 is a deficient number, since it is larger than the sum of its proper divisors (1).

427320137544737 is an equidigital number, since it uses as much as digits as its factorization.

427320137544737 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82978560, while the sum is 59.

The spelling of 427320137544737 in words is "four hundred twenty-seven trillion, three hundred twenty billion, one hundred thirty-seven million, five hundred forty-four thousand, seven hundred thirty-seven".