123537063361 has 4 divisors (see below), whose sum is σ = 123779769300. Its totient is φ = 123294357424.

The previous prime is 123537063317. The next prime is 123537063371. The reversal of 123537063361 is 163360735321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163360735321 = 7 ⋅23337247903.

It can be written as a sum of positive squares in 2 ways, for example, as 116584005136 + 6953058225 = 341444^2 + 83385^2 .

It is a cyclic number.

It is not a de Polignac number, because 123537063361 - 2⁷ = 123537063233 is a prime.

It is a super-2 number, since 2×123537063361² (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 (123537063301) 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, 121352206 + ... + 121353223.

It is an arithmetic number, because the mean of its divisors is an integer number (30944942325).

Almost surely, 2^123537063361 is an apocalyptic number.

It is an amenable number.

123537063361 is a deficient number, since it is larger than the sum of its proper divisors (242705939).

123537063361 is an equidigital number, since it uses as much as digits as its factorization.

123537063361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242705938.

The product of its (nonzero) digits is 204120, while the sum is 40.

Adding to 123537063361 its reverse (163360735321), we get a palindrome (286897798682).

The spelling of 123537063361 in words is "one hundred twenty-three billion, five hundred thirty-seven million, sixty-three thousand, three hundred sixty-one".