63726742097 has 4 divisors (see below), whose sum is σ = 65449086516. Its totient is φ = 62004397680.

The previous prime is 63726742087. The next prime is 63726742099. The reversal of 63726742097 is 79024762736.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36480618001 + 27246124096 = 190999^2 + 165064^2 .

It is a cyclic number.

It is not a de Polignac number, because 63726742097 - 2⁴ = 63726742081 is a prime.

It is a super-2 number, since 2×63726742097² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63726742099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861172154 + ... + 861172227.

It is an arithmetic number, because the mean of its divisors is an integer number (16362271629).

Almost surely, 2^63726742097 is an apocalyptic number.

It is an amenable number.

63726742097 is a deficient number, since it is larger than the sum of its proper divisors (1722344419).

63726742097 is a wasteful number, since it uses less digits than its factorization.

63726742097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722344418.

The product of its (nonzero) digits is 5334336, while the sum is 53.

The spelling of 63726742097 in words is "sixty-three billion, seven hundred twenty-six million, seven hundred forty-two thousand, ninety-seven".