1251351833164 has 12 divisors (see below), whose sum is σ = 2209245051384. Its totient is φ = 620138961344.

The previous prime is 1251351833113. The next prime is 1251351833201. The reversal of 1251351833164 is 4613381531521.

It is a self number, because there is not a number n which added to its sum of digits gives 1251351833164.

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, 1384238302 + ... + 1384239205.

It is an arithmetic number, because the mean of its divisors is an integer number (184103754282).

Almost surely, 2^{1251351833164} is an apocalyptic number.

It is an amenable number.

1251351833164 is a deficient number, since it is larger than the sum of its proper divisors (957893218220).

1251351833164 is a wasteful number, since it uses less digits than its factorization.

1251351833164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768477624 (or 2768477622 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 1251351833164 in words is "one trillion, two hundred fifty-one billion, three hundred fifty-one million, eight hundred thirty-three thousand, one hundred sixty-four".