1111642110638 has 64 divisors (see below), whose sum is σ = 1752409624320. Its totient is φ = 528461107200.

The previous prime is 1111642110629. The next prime is 1111642110661. The reversal of 1111642110638 is 8360112461111.

It is a junction number, because it is equal to n+sod(n) for n = 1111642110598 and 1111642110607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266132006 + ... + 266136182.

It is an arithmetic number, because the mean of its divisors is an integer number (27381400380).

Almost surely, 2^{1111642110638} is an apocalyptic number.

1111642110638 is a deficient number, since it is larger than the sum of its proper divisors (640767513682).

1111642110638 is a wasteful number, since it uses less digits than its factorization.

1111642110638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893.

The product of its (nonzero) digits is 6912, while the sum is 35.

Adding to 1111642110638 its reverse (8360112461111), we get a palindrome (9471754571749).

The spelling of 1111642110638 in words is "one trillion, one hundred eleven billion, six hundred forty-two million, one hundred ten thousand, six hundred thirty-eight".