66551302363 has 32 divisors (see below), whose sum is σ = 82862299520. Its totient is φ = 52045701120.

The previous prime is 66551302361. The next prime is 66551302369. The reversal of 66551302363 is 36320315566.

It is a happy number.

It is not a de Polignac number, because 66551302363 - 2¹ = 66551302361 is a prime.

It is a super-2 number, since 2×66551302363² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66551302361) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4167931 + ... + 4183867.

It is an arithmetic number, because the mean of its divisors is an integer number (2589446860).

Almost surely, 2^66551302363 is an apocalyptic number.

66551302363 is a deficient number, since it is larger than the sum of its proper divisors (16310997157).

66551302363 is a wasteful number, since it uses less digits than its factorization.

66551302363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16487.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 66551302363 in words is "sixty-six billion, five hundred fifty-one million, three hundred two thousand, three hundred sixty-three".