15123132001 has 4 divisors (see below), whose sum is σ = 15124554900. Its totient is φ = 15121709104.

The previous prime is 15123131999. The next prime is 15123132041. The reversal of 15123132001 is 10023132151.

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 11033401600 + 4089730401 = 105040^2 + 63951^2 .

It is a cyclic number.

It is not a de Polignac number, because 15123132001 - 2¹ = 15123131999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15123132001.

It is not an unprimeable number, because it can be changed into a prime (15123132041) 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, 695386 + ... + 716803.

It is an arithmetic number, because the mean of its divisors is an integer number (3781138725).

Almost surely, 2^15123132001 is an apocalyptic number.

It is an amenable number.

15123132001 is a deficient number, since it is larger than the sum of its proper divisors (1422899).

15123132001 is a wasteful number, since it uses less digits than its factorization.

15123132001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422898.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 15123132001 its reverse (10023132151), we get a palindrome (25146264152).

The spelling of 15123132001 in words is "fifteen billion, one hundred twenty-three million, one hundred thirty-two thousand, one".