63208742121 has 160 divisors (see below), whose sum is σ = 113729158400. Its totient is φ = 34950569472.

The previous prime is 63208742101. The next prime is 63208742131. The reversal of 63208742121 is 12124780236.

It is a happy number.

63208742121 is a `hidden beast` number, since 6 + 3 + 208 + 7 + 421 + 21 = 666.

It is not a de Polignac number, because 63208742121 - 2⁵ = 63208742089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63208742101) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 187562865 + ... + 187563201.

It is an arithmetic number, because the mean of its divisors is an integer number (710807240).

Almost surely, 2^63208742121 is an apocalyptic number.

It is an amenable number.

63208742121 is a deficient number, since it is larger than the sum of its proper divisors (50520416279).

63208742121 is a wasteful number, since it uses less digits than its factorization.

63208742121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 547 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The spelling of 63208742121 in words is "sixty-three billion, two hundred eight million, seven hundred forty-two thousand, one hundred twenty-one".