11251265650638 has 32 divisors (see below), whose sum is σ = 24233662881792. Its totient is φ = 3461903944800.

The previous prime is 11251265650621. The next prime is 11251265650663. The reversal of 11251265650638 is 83605656215211.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13269283 + ... + 14091713.

It is an arithmetic number, because the mean of its divisors is an integer number (757301965056).

Almost surely, 2^{11251265650638} is an apocalyptic number.

11251265650638 is an abundant number, since it is smaller than the sum of its proper divisors (12982397231154).

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

11251265650638 is a wasteful number, since it uses less digits than its factorization.

11251265650638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997840.

The product of its (nonzero) digits is 2592000, while the sum is 51.

The spelling of 11251265650638 in words is "eleven trillion, two hundred fifty-one billion, two hundred sixty-five million, six hundred fifty thousand, six hundred thirty-eight".