15123105401 has 2 divisors, whose sum is σ = 15123105402. Its totient is φ = 15123105400.

The previous prime is 15123105377. The next prime is 15123105451. The reversal of 15123105401 is 10450132151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14742816400 + 380289001 = 121420^2 + 19501^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15123105401 is a prime.

It is not a weakly prime, because it can be changed into another prime (15123105451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561552700 + 7561552701.

It is an arithmetic number, because the mean of its divisors is an integer number (7561552701).

Almost surely, 2^15123105401 is an apocalyptic number.

It is an amenable number.

15123105401 is a deficient number, since it is larger than the sum of its proper divisors (1).

15123105401 is an equidigital number, since it uses as much as digits as its factorization.

15123105401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 23.

Adding to 15123105401 its reverse (10450132151), we get a palindrome (25573237552).

The spelling of 15123105401 in words is "fifteen billion, one hundred twenty-three million, one hundred five thousand, four hundred one".