111400621641 has 6 divisors (see below), whose sum is σ = 160912009050. Its totient is φ = 74267081088.

The previous prime is 111400621589. The next prime is 111400621643. The reversal of 111400621641 is 146126004111.

111400621641 is a `hidden beast` number, since 1 + 1 + 1 + 400 + 6 + 216 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56318409225 + 55082212416 = 237315^2 + 234696^2 .

It is not a de Polignac number, because 111400621641 - 2¹³ = 111400613449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111400621643) 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, 6188923416 + ... + 6188923433.

It is an arithmetic number, because the mean of its divisors is an integer number (26818668175).

Almost surely, 2^111400621641 is an apocalyptic number.

It is an amenable number.

111400621641 is a deficient number, since it is larger than the sum of its proper divisors (49511387409).

111400621641 is a wasteful number, since it uses less digits than its factorization.

111400621641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12377846855 (or 12377846852 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 111400621641 its reverse (146126004111), we get a palindrome (257526625752).

The spelling of 111400621641 in words is "one hundred eleven billion, four hundred million, six hundred twenty-one thousand, six hundred forty-one".