427770153749 has 2 divisors, whose sum is σ = 427770153750. Its totient is φ = 427770153748.

The previous prime is 427770153743. The next prime is 427770153817. The reversal of 427770153749 is 947351077724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 280045231249 + 147724922500 = 529193^2 + 384350^2 .

It is a cyclic number.

It is not a de Polignac number, because 427770153749 - 2²⁰ = 427769105173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427770153694 and 427770153703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427770153743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213885076874 + 213885076875.

It is an arithmetic number, because the mean of its divisors is an integer number (213885076875).

Almost surely, 2^427770153749 is an apocalyptic number.

It is an amenable number.

427770153749 is a deficient number, since it is larger than the sum of its proper divisors (1).

427770153749 is an equidigital number, since it uses as much as digits as its factorization.

427770153749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10372320, while the sum is 56.

The spelling of 427770153749 in words is "four hundred twenty-seven billion, seven hundred seventy million, one hundred fifty-three thousand, seven hundred forty-nine".