251272680009 has 16 divisors (see below), whose sum is σ = 361373625984. Its totient is φ = 154384272000.

The previous prime is 251272680007. The next prime is 251272680023. The reversal of 251272680009 is 900086272152.

It is not a de Polignac number, because 251272680009 - 2¹ = 251272680007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (251272680007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5080692 + ... + 5129909.

It is an arithmetic number, because the mean of its divisors is an integer number (22585851624).

Almost surely, 2^251272680009 is an apocalyptic number.

It is an amenable number.

251272680009 is a deficient number, since it is larger than the sum of its proper divisors (110100945975).

251272680009 is a wasteful number, since it uses less digits than its factorization.

251272680009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10211248.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 251272680009 in words is "two hundred fifty-one billion, two hundred seventy-two million, six hundred eighty thousand, nine".