63073521197 has 2 divisors, whose sum is σ = 63073521198. Its totient is φ = 63073521196.

The previous prime is 63073521187. The next prime is 63073521257. The reversal of 63073521197 is 79112537036.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50454593641 + 12618927556 = 224621^2 + 112334^2 .

It is a cyclic number.

It is not a de Polignac number, because 63073521197 - 2³² = 58778553901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (63073521107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31536760598 + 31536760599.

It is an arithmetic number, because the mean of its divisors is an integer number (31536760599).

Almost surely, 2^63073521197 is an apocalyptic number.

It is an amenable number.

63073521197 is a deficient number, since it is larger than the sum of its proper divisors (1).

63073521197 is an equidigital number, since it uses as much as digits as its factorization.

63073521197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 238140, while the sum is 44.

The spelling of 63073521197 in words is "sixty-three billion, seventy-three million, five hundred twenty-one thousand, one hundred ninety-seven".