251272746270 has 240 divisors, whose sum is σ = 846413523648. Its totient is φ = 53015679360.

The previous prime is 251272746259. The next prime is 251272746293. The reversal of 251272746270 is 72647272152.

251272746270 is a `hidden beast` number, since 2 + 5 + 12 + 7 + 2 + 7 + 4 + 627 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 272475 + ... + 759465.

Almost surely, 2^251272746270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251272746270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423206761824).

251272746270 is an abundant number, since it is smaller than the sum of its proper divisors (595140777378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251272746270 is a wasteful number, since it uses less digits than its factorization.

251272746270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487037 (or 487021 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The spelling of 251272746270 in words is "two hundred fifty-one billion, two hundred seventy-two million, seven hundred forty-six thousand, two hundred seventy".