264400200211531 has 4 divisors (see below), whose sum is σ = 272929238928064. Its totient is φ = 255871161495000.

The previous prime is 264400200211517. The next prime is 264400200211547. The reversal of 264400200211531 is 135112002004462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 264400200211531 - 2²¹ = 264400198114379 is a prime.

It is a super-2 number, since 2×264400200211531² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 8529038716501 = 264400200211531 / (2 + 6 + 4 + 4 + 0 + 0 + 2 + 0 + 0 + 2 + 1 + 1 + 5 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264400200211493 and 264400200211502.

It is not an unprimeable number, because it can be changed into a prime (264400200211501) 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, 4264519358220 + ... + 4264519358281.

It is an arithmetic number, because the mean of its divisors is an integer number (68232309732016).

Almost surely, 2^{264400200211531} is an apocalyptic number.

264400200211531 is a deficient number, since it is larger than the sum of its proper divisors (8529038716533).

264400200211531 is an equidigital number, since it uses as much as digits as its factorization.

264400200211531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8529038716532.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 264400200211531 its reverse (135112002004462), we get a palindrome (399512202215993).

The spelling of 264400200211531 in words is "two hundred sixty-four trillion, four hundred billion, two hundred million, two hundred eleven thousand, five hundred thirty-one".