113544121251 has 16 divisors (see below), whose sum is σ = 169183260288. Its totient is φ = 67136212800.

The previous prime is 113544121241. The next prime is 113544121279. The reversal of 113544121251 is 152121445311.

It is not a de Polignac number, because 113544121251 - 2³⁴ = 96364252067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113544121231) 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, 41958781 + ... + 41961486.

It is an arithmetic number, because the mean of its divisors is an integer number (10573953768).

Almost surely, 2^113544121251 is an apocalyptic number.

113544121251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

113544121251 is a deficient number, since it is larger than the sum of its proper divisors (55639139037).

113544121251 is a wasteful number, since it uses less digits than its factorization.

113544121251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83920322.

The product of its digits is 4800, while the sum is 30.

Adding to 113544121251 its reverse (152121445311), we get a palindrome (265665566562).

The spelling of 113544121251 in words is "one hundred thirteen billion, five hundred forty-four million, one hundred twenty-one thousand, two hundred fifty-one".