30412753781 has 2 divisors, whose sum is σ = 30412753782. Its totient is φ = 30412753780.

The previous prime is 30412753771. The next prime is 30412753801. The reversal of 30412753781 is 18735721403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30412220881 + 532900 = 174391^2 + 730^2 .

It is a cyclic number.

It is not a de Polignac number, because 30412753781 - 2²² = 30408559477 is a prime.

It is a super-2 number, since 2×30412753781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30412753771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15206376890 + 15206376891.

It is an arithmetic number, because the mean of its divisors is an integer number (15206376891).

Almost surely, 2^30412753781 is an apocalyptic number.

It is an amenable number.

30412753781 is a deficient number, since it is larger than the sum of its proper divisors (1).

30412753781 is an equidigital number, since it uses as much as digits as its factorization.

30412753781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 41.

The spelling of 30412753781 in words is "thirty billion, four hundred twelve million, seven hundred fifty-three thousand, seven hundred eighty-one".