251063000145 has 32 divisors (see below), whose sum is σ = 465740064000. Its totient is φ = 128078514432.

The previous prime is 251063000117. The next prime is 251063000207. The reversal of 251063000145 is 541000360152.

251063000145 is a `hidden beast` number, since 2 + 5 + 10 + 630 + 0 + 0 + 14 + 5 = 666.

It is not a de Polignac number, because 251063000145 - 2⁹ = 251062999633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40425720 + ... + 40431929.

It is an arithmetic number, because the mean of its divisors is an integer number (14554377000).

Almost surely, 2^251063000145 is an apocalyptic number.

It is an amenable number.

251063000145 is a deficient number, since it is larger than the sum of its proper divisors (214677063855).

251063000145 is a wasteful number, since it uses less digits than its factorization.

251063000145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80857686 (or 80857680 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 251063000145 its reverse (541000360152), we get a palindrome (792063360297).

The spelling of 251063000145 in words is "two hundred fifty-one billion, sixty-three million, one hundred forty-five", and thus it is an aban number.