260400403001 has 4 divisors (see below), whose sum is σ = 262059004452. Its totient is φ = 258741801552.

The previous prime is 260400402959. The next prime is 260400403009. The reversal of 260400403001 is 100304004062.

It is a happy number.

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 184058160400 + 76342242601 = 429020^2 + 276301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260400403001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260400403009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829300490 + ... + 829300803.

It is an arithmetic number, because the mean of its divisors is an integer number (65514751113).

Almost surely, 2^260400403001 is an apocalyptic number.

It is an amenable number.

260400403001 is a deficient number, since it is larger than the sum of its proper divisors (1658601451).

260400403001 is a wasteful number, since it uses less digits than its factorization.

260400403001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658601450.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 260400403001 its reverse (100304004062), we get a palindrome (360704407063).

The spelling of 260400403001 in words is "two hundred sixty billion, four hundred million, four hundred three thousand, one".