63401054572837 has 2 divisors, whose sum is σ = 63401054572838. Its totient is φ = 63401054572836.

The previous prime is 63401054572777. The next prime is 63401054572861. The reversal of 63401054572837 is 73827545010436.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41660712249121 + 21740342323716 = 6454511^2 + 4662654^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63401054572837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63401054972837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31700527286418 + 31700527286419.

It is an arithmetic number, because the mean of its divisors is an integer number (31700527286419).

Almost surely, 2^{63401054572837} is an apocalyptic number.

It is an amenable number.

63401054572837 is a deficient number, since it is larger than the sum of its proper divisors (1).

63401054572837 is an equidigital number, since it uses as much as digits as its factorization.

63401054572837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16934400, while the sum is 55.

The spelling of 63401054572837 in words is "sixty-three trillion, four hundred one billion, fifty-four million, five hundred seventy-two thousand, eight hundred thirty-seven".