111405055451 has 8 divisors (see below), whose sum is σ = 112832342064. Its totient is φ = 109984127200.

The previous prime is 111405055429. The next prime is 111405055493. The reversal of 111405055451 is 154550504111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111405055451 is a prime.

It is a super-2 number, since 2×111405055451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111405555451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1554320 + ... + 1624413.

It is an arithmetic number, because the mean of its divisors is an integer number (14104042758).

Almost surely, 2^111405055451 is an apocalyptic number.

111405055451 is a deficient number, since it is larger than the sum of its proper divisors (1427286613).

111405055451 is a wasteful number, since it uses less digits than its factorization.

111405055451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179181.

The product of its (nonzero) digits is 10000, while the sum is 32.

Adding to 111405055451 its reverse (154550504111), we get a palindrome (265955559562).

The spelling of 111405055451 in words is "one hundred eleven billion, four hundred five million, fifty-five thousand, four hundred fifty-one".