110401136452561 has 4 divisors (see below), whose sum is σ = 110402833612852. Its totient is φ = 110399439292272.

The previous prime is 110401136452559. The next prime is 110401136452573. The reversal of 110401136452561 is 165254631104011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10545963977025 + 99855172475536 = 3247455^2 + 9992756^2 .

It is a cyclic number.

It is not a de Polignac number, because 110401136452561 - 2¹ = 110401136452559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (110401146452561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848482566 + ... + 848612671.

It is an arithmetic number, because the mean of its divisors is an integer number (27600708403213).

Almost surely, 2^{110401136452561} is an apocalyptic number.

It is an amenable number.

110401136452561 is a deficient number, since it is larger than the sum of its proper divisors (1697160291).

110401136452561 is an equidigital number, since it uses as much as digits as its factorization.

110401136452561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697160290.

The product of its (nonzero) digits is 86400, while the sum is 40.

Adding to 110401136452561 its reverse (165254631104011), we get a palindrome (275655767556572).

The spelling of 110401136452561 in words is "one hundred ten trillion, four hundred one billion, one hundred thirty-six million, four hundred fifty-two thousand, five hundred sixty-one".