63187804121 has 16 divisors (see below), whose sum is σ = 68296670400. Its totient is φ = 58114801728.

The previous prime is 63187804087. The next prime is 63187804133. The reversal of 63187804121 is 12140878136.

It is a cyclic number.

It is not a de Polignac number, because 63187804121 - 2¹⁰ = 63187803097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63187804921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4088210 + ... + 4103636.

It is an arithmetic number, because the mean of its divisors is an integer number (4268541900).

Almost surely, 2^63187804121 is an apocalyptic number.

It is an amenable number.

63187804121 is a deficient number, since it is larger than the sum of its proper divisors (5108866279).

63187804121 is a wasteful number, since it uses less digits than its factorization.

63187804121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16568.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 63187804121 in words is "sixty-three billion, one hundred eighty-seven million, eight hundred four thousand, one hundred twenty-one".