66736138710 has 32 divisors (see below), whose sum is σ = 161817943392. Its totient is φ = 17612835840.

The previous prime is 66736138709. The next prime is 66736138747. The reversal of 66736138710 is 1783163766.

It is a self number, because there is not a number n which added to its sum of digits gives 66736138710.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11463781 + ... + 11469600.

It is an arithmetic number, because the mean of its divisors is an integer number (5056810731).

Almost surely, 2^66736138710 is an apocalyptic number.

66736138710 is an abundant number, since it is smaller than the sum of its proper divisors (95081804682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66736138710 is a wasteful number, since it uses less digits than its factorization.

66736138710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22933488.

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 66736138710 in words is "sixty-six billion, seven hundred thirty-six million, one hundred thirty-eight thousand, seven hundred ten".