111395430261 has 6 divisors (see below), whose sum is σ = 160904510390. Its totient is φ = 74263620168.

The previous prime is 111395430259. The next prime is 111395430281. The reversal of 111395430261 is 162034593111.

111395430261 is a `hidden beast` number, since 1 + 1 + 1 + 395 + 4 + 3 + 0 + 261 = 666.

It can be written as a sum of positive squares in only one way, i.e., 73606403025 + 37789027236 = 271305^2 + 194394^2 .

It is not a de Polignac number, because 111395430261 - 2¹ = 111395430259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111395430221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6188635006 + ... + 6188635023.

Almost surely, 2^111395430261 is an apocalyptic number.

It is an amenable number.

111395430261 is a deficient number, since it is larger than the sum of its proper divisors (49509080129).

111395430261 is a wasteful number, since it uses less digits than its factorization.

111395430261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12377270035 (or 12377270032 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 111395430261 in words is "one hundred eleven billion, three hundred ninety-five million, four hundred thirty thousand, two hundred sixty-one".