105231451553 has 4 divisors (see below), whose sum is σ = 105252788628. Its totient is φ = 105210114480.

The previous prime is 105231451453. The next prime is 105231451571. The reversal of 105231451553 is 355154132501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 355154132501 = 7 ⋅50736304643.

It can be written as a sum of positive squares in 2 ways, for example, as 53531151424 + 51700300129 = 231368^2 + 227377^2 .

It is a cyclic number.

It is not a de Polignac number, because 105231451553 - 2³⁶ = 36511974817 is a prime.

It is a super-2 number, since 2×105231451553² (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 (105231451453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10661138 + ... + 10671003.

It is an arithmetic number, because the mean of its divisors is an integer number (26313197157).

Almost surely, 2^105231451553 is an apocalyptic number.

It is an amenable number.

105231451553 is a deficient number, since it is larger than the sum of its proper divisors (21337075).

105231451553 is an equidigital number, since it uses as much as digits as its factorization.

105231451553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21337074.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 105231451553 in words is "one hundred five billion, two hundred thirty-one million, four hundred fifty-one thousand, five hundred fifty-three".