63437226633401 has 2 divisors, whose sum is σ = 63437226633402. Its totient is φ = 63437226633400.

The previous prime is 63437226633371. The next prime is 63437226633449. The reversal of 63437226633401 is 10433662273436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63437226633001 + 400 = 7964749^2 + 20^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63437226633401 is a prime.

It is a super-3 number, since 3×63437226633401³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63437226633401.

It is not a weakly prime, because it can be changed into another prime (63437226633701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31718613316700 + 31718613316701.

It is an arithmetic number, because the mean of its divisors is an integer number (31718613316701).

Almost surely, 2^{63437226633401} is an apocalyptic number.

It is an amenable number.

63437226633401 is a deficient number, since it is larger than the sum of its proper divisors (1).

63437226633401 is an equidigital number, since it uses as much as digits as its factorization.

63437226633401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 50.

The spelling of 63437226633401 in words is "sixty-three trillion, four hundred thirty-seven billion, two hundred twenty-six million, six hundred thirty-three thousand, four hundred one".