46537046821 has 2 divisors, whose sum is σ = 46537046822. Its totient is φ = 46537046820.

The previous prime is 46537046819. The next prime is 46537046957. The reversal of 46537046821 is 12864073564.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27826910596 + 18710136225 = 166814^2 + 136785^2 .

It is a cyclic number.

It is not a de Polignac number, because 46537046821 - 2¹ = 46537046819 is a prime.

Together with 46537046819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46537040821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23268523410 + 23268523411.

It is an arithmetic number, because the mean of its divisors is an integer number (23268523411).

Almost surely, 2^46537046821 is an apocalyptic number.

It is an amenable number.

46537046821 is a deficient number, since it is larger than the sum of its proper divisors (1).

46537046821 is an equidigital number, since it uses as much as digits as its factorization.

46537046821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 46537046821 in words is "forty-six billion, five hundred thirty-seven million, forty-six thousand, eight hundred twenty-one".