157449161866 has 8 divisors (see below), whose sum is σ = 236183150340. Its totient is φ = 78721445088.

The previous prime is 157449161843. The next prime is 157449161879. The reversal of 157449161866 is 668161944751.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 154353908641 + 3095253225 = 392879^2 + 55635^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 157449161866.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504651 + ... + 1605886.

Almost surely, 2^157449161866 is an apocalyptic number.

157449161866 is a deficient number, since it is larger than the sum of its proper divisors (78733988474).

157449161866 is a wasteful number, since it uses less digits than its factorization.

157449161866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135848.

The product of its digits is 8709120, while the sum is 58.

The spelling of 157449161866 in words is "one hundred fifty-seven billion, four hundred forty-nine million, one hundred sixty-one thousand, eight hundred sixty-six".