66503134951 has 16 divisors (see below), whose sum is σ = 72847779840. Its totient is φ = 60208780320.

The previous prime is 66503134949. The next prime is 66503134963. The reversal of 66503134951 is 15943130566.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 66503134951 - 2¹ = 66503134949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66503134898 and 66503134907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66503104951) 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, 2938786 + ... + 2961328.

It is an arithmetic number, because the mean of its divisors is an integer number (4552986240).

Almost surely, 2^66503134951 is an apocalyptic number.

66503134951 is a deficient number, since it is larger than the sum of its proper divisors (6344644889).

66503134951 is a wasteful number, since it uses less digits than its factorization.

66503134951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23646.

The product of its (nonzero) digits is 291600, while the sum is 43.

The spelling of 66503134951 in words is "sixty-six billion, five hundred three million, one hundred thirty-four thousand, nine hundred fifty-one".