66152247338 has 4 divisors (see below), whose sum is σ = 99228371010. Its totient is φ = 33076123668.

The previous prime is 66152247323. The next prime is 66152247361. The reversal of 66152247338 is 83374225166.

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., 39639615409 + 26512631929 = 199097^2 + 162827^2 .

It is a super-2 number, since 2×66152247338² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66152247292 and 66152247301.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16538061833 + ... + 16538061836.

Almost surely, 2^66152247338 is an apocalyptic number.

66152247338 is a deficient number, since it is larger than the sum of its proper divisors (33076123672).

66152247338 is a wasteful number, since it uses less digits than its factorization.

66152247338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33076123671.

The product of its digits is 1451520, while the sum is 47.

The spelling of 66152247338 in words is "sixty-six billion, one hundred fifty-two million, two hundred forty-seven thousand, three hundred thirty-eight".