66156416362 has 4 divisors (see below), whose sum is σ = 99234624546. Its totient is φ = 33078208180.

The previous prime is 66156416303. The next prime is 66156416377. The reversal of 66156416362 is 26361465166.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 52331595121 + 13824821241 = 228761^2 + 117579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16539104089 + ... + 16539104092.

Almost surely, 2^66156416362 is an apocalyptic number.

66156416362 is a deficient number, since it is larger than the sum of its proper divisors (33078208184).

66156416362 is a wasteful number, since it uses less digits than its factorization.

66156416362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33078208183.

The product of its digits is 933120, while the sum is 46.

The spelling of 66156416362 in words is "sixty-six billion, one hundred fifty-six million, four hundred sixteen thousand, three hundred sixty-two".