42681300021527 has 2 divisors, whose sum is σ = 42681300021528. Its totient is φ = 42681300021526.

The previous prime is 42681300021517. The next prime is 42681300021649. The reversal of 42681300021527 is 72512000318624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42681300021527 - 2¹⁸ = 42681299759383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42681300021517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21340650010763 + 21340650010764.

It is an arithmetic number, because the mean of its divisors is an integer number (21340650010764).

Almost surely, 2^{42681300021527} is an apocalyptic number.

42681300021527 is a deficient number, since it is larger than the sum of its proper divisors (1).

42681300021527 is an equidigital number, since it uses as much as digits as its factorization.

42681300021527 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 41.

The spelling of 42681300021527 in words is "forty-two trillion, six hundred eighty-one billion, three hundred million, twenty-one thousand, five hundred twenty-seven".