42789468047461 has 2 divisors, whose sum is σ = 42789468047462. Its totient is φ = 42789468047460.

The previous prime is 42789468047399. The next prime is 42789468047549. The reversal of 42789468047461 is 16474086498724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32890855853025 + 9898612194436 = 5735055^2 + 3146206^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42789468047461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42789468041461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21394734023730 + 21394734023731.

It is an arithmetic number, because the mean of its divisors is an integer number (21394734023731).

Almost surely, 2^{42789468047461} is an apocalyptic number.

It is an amenable number.

42789468047461 is a deficient number, since it is larger than the sum of its proper divisors (1).

42789468047461 is an equidigital number, since it uses as much as digits as its factorization.

42789468047461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 520224768, while the sum is 70.

The spelling of 42789468047461 in words is "forty-two trillion, seven hundred eighty-nine billion, four hundred sixty-eight million, forty-seven thousand, four hundred sixty-one".