66252348154 has 4 divisors (see below), whose sum is σ = 99378522234. Its totient is φ = 33126174076.

The previous prime is 66252348137. The next prime is 66252348179. The reversal of 66252348154 is 45184325266.

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., 49561000129 + 16691348025 = 222623^2 + 129195^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16563087037 + ... + 16563087040.

Almost surely, 2^66252348154 is an apocalyptic number.

66252348154 is a deficient number, since it is larger than the sum of its proper divisors (33126174080).

66252348154 is a wasteful number, since it uses less digits than its factorization.

66252348154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33126174079.

The product of its digits is 1382400, while the sum is 46.

The spelling of 66252348154 in words is "sixty-six billion, two hundred fifty-two million, three hundred forty-eight thousand, one hundred fifty-four".