111402011555 has 64 divisors (see below), whose sum is σ = 140938444800. Its totient is φ = 84467834880.

The previous prime is 111402011531. The next prime is 111402011563. The reversal of 111402011555 is 555110204111.

It is a happy number.

It is not a de Polignac number, because 111402011555 - 2¹⁴ = 111401995171 is a prime.

It is a super-3 number, since 3×111402011555³ (a number of 34 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 315586259 + ... + 315586611.

It is an arithmetic number, because the mean of its divisors is an integer number (2202163200).

Almost surely, 2^111402011555 is an apocalyptic number.

111402011555 is a deficient number, since it is larger than the sum of its proper divisors (29536433245).

111402011555 is a wasteful number, since it uses less digits than its factorization.

111402011555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764.

The product of its (nonzero) digits is 1000, while the sum is 26.

Adding to 111402011555 its reverse (555110204111), we get a palindrome (666512215666).

The spelling of 111402011555 in words is "one hundred eleven billion, four hundred two million, eleven thousand, five hundred fifty-five".