63555025651 has 4 divisors (see below), whose sum is σ = 68443873792. Its totient is φ = 58666177512.

The previous prime is 63555025649. The next prime is 63555025673. The reversal of 63555025651 is 15652055536.

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

It is a cyclic number.

It is not a de Polignac number, because 63555025651 - 2¹ = 63555025649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63555025598 and 63555025607.

It is not an unprimeable number, because it can be changed into a prime (63555025601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2444424051 + ... + 2444424076.

It is an arithmetic number, because the mean of its divisors is an integer number (17110968448).

Almost surely, 2^63555025651 is an apocalyptic number.

63555025651 is a deficient number, since it is larger than the sum of its proper divisors (4888848141).

63555025651 is a wasteful number, since it uses less digits than its factorization.

63555025651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4888848140.

The product of its (nonzero) digits is 675000, while the sum is 43.

The spelling of 63555025651 in words is "sixty-three billion, five hundred fifty-five million, twenty-five thousand, six hundred fifty-one".