611303402201 has 4 divisors (see below), whose sum is σ = 627825115812. Its totient is φ = 594781688592.

The previous prime is 611303402191. The next prime is 611303402209. The reversal of 611303402201 is 102204303116.

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 298094160400 + 313209241801 = 545980^2 + 559651^2 .

It is a cyclic number.

It is not a de Polignac number, because 611303402201 - 2¹⁸ = 611303140057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611303402209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8260856750 + ... + 8260856823.

It is an arithmetic number, because the mean of its divisors is an integer number (156956278953).

Almost surely, 2^611303402201 is an apocalyptic number.

It is an amenable number.

611303402201 is a deficient number, since it is larger than the sum of its proper divisors (16521713611).

611303402201 is a wasteful number, since it uses less digits than its factorization.

611303402201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16521713610.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 611303402201 its reverse (102204303116), we get a palindrome (713507705317).

The spelling of 611303402201 in words is "six hundred eleven billion, three hundred three million, four hundred two thousand, two hundred one".