63138850551 has 24 divisors (see below), whose sum is σ = 106195808160. Its totient is φ = 35398598976.

The previous prime is 63138850529. The next prime is 63138850571. The reversal of 63138850551 is 15505883136.

63138850551 is a `hidden beast` number, since 6 + 3 + 13 + 8 + 85 + 0 + 551 = 666.

It is not a de Polignac number, because 63138850551 - 2⁵ = 63138850519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63138850497 and 63138850506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63138850571) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9451416 + ... + 9458093.

It is an arithmetic number, because the mean of its divisors is an integer number (4424825340).

Almost surely, 2^63138850551 is an apocalyptic number.

63138850551 is a deficient number, since it is larger than the sum of its proper divisors (43056957609).

63138850551 is a wasteful number, since it uses less digits than its factorization.

63138850551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18909575 (or 18909572 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The spelling of 63138850551 in words is "sixty-three billion, one hundred thirty-eight million, eight hundred fifty thousand, five hundred fifty-one".