611646351101 has 4 divisors (see below), whose sum is σ = 611655746652. Its totient is φ = 611636955552.

The previous prime is 611646351089. The next prime is 611646351109. The reversal of 611646351101 is 101153646116.

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 381343300900 + 230303050201 = 617530^2 + 479899^2 .

It is a cyclic number.

It is not a de Polignac number, because 611646351101 - 2³⁸ = 336768444157 is a prime.

It is a super-2 number, since 2×611646351101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611646351109) 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, 4599440 + ... + 4730553.

It is an arithmetic number, because the mean of its divisors is an integer number (152913936663).

Almost surely, 2^611646351101 is an apocalyptic number.

It is an amenable number.

611646351101 is a deficient number, since it is larger than the sum of its proper divisors (9395551).

611646351101 is an equidigital number, since it uses as much as digits as its factorization.

611646351101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9395550.

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 611646351101 its reverse (101153646116), we get a palindrome (712799997217).

The spelling of 611646351101 in words is "six hundred eleven billion, six hundred forty-six million, three hundred fifty-one thousand, one hundred one".