46782028781 has 2 divisors, whose sum is σ = 46782028782. Its totient is φ = 46782028780.

The previous prime is 46782028763. The next prime is 46782028789. The reversal of 46782028781 is 18782028764.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40961712100 + 5820316681 = 202390^2 + 76291^2 .

It is a cyclic number.

It is not a de Polignac number, because 46782028781 - 2³⁰ = 45708286957 is a prime.

It is a super-2 number, since 2×46782028781² (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 (46782028789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23391014390 + 23391014391.

It is an arithmetic number, because the mean of its divisors is an integer number (23391014391).

Almost surely, 2^46782028781 is an apocalyptic number.

It is an amenable number.

46782028781 is a deficient number, since it is larger than the sum of its proper divisors (1).

46782028781 is an equidigital number, since it uses as much as digits as its factorization.

46782028781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2408448, while the sum is 53.

The spelling of 46782028781 in words is "forty-six billion, seven hundred eighty-two million, twenty-eight thousand, seven hundred eighty-one".