111551100513 has 16 divisors (see below), whose sum is σ = 150638380800. Its totient is φ = 73415871360.

The previous prime is 111551100511. The next prime is 111551100539. The reversal of 111551100513 is 315001155111.

It is not a de Polignac number, because 111551100513 - 2¹ = 111551100511 is a prime.

It is a super-2 number, since 2×111551100513² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111551100511) 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, 1931293 + ... + 1988213.

It is an arithmetic number, because the mean of its divisors is an integer number (9414898800).

Almost surely, 2^111551100513 is an apocalyptic number.

It is an amenable number.

111551100513 is a deficient number, since it is larger than the sum of its proper divisors (39087280287).

111551100513 is an equidigital number, since it uses as much as digits as its factorization.

111551100513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65272.

The product of its (nonzero) digits is 375, while the sum is 24.

Adding to 111551100513 its reverse (315001155111), we get a palindrome (426552255624).

The spelling of 111551100513 in words is "one hundred eleven billion, five hundred fifty-one million, one hundred thousand, five hundred thirteen".