611161103021 has 16 divisors (see below), whose sum is σ = 722092059648. Its totient is φ = 506186841600.

The previous prime is 611161103011. The next prime is 611161103071. The reversal of 611161103021 is 120301161116.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 611161103021 - 2⁶ = 611161102957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611161103011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986980 + ... + 2273853.

It is an arithmetic number, because the mean of its divisors is an integer number (45130753728).

Almost surely, 2^611161103021 is an apocalyptic number.

It is an amenable number.

611161103021 is a deficient number, since it is larger than the sum of its proper divisors (110930956627).

611161103021 is a wasteful number, since it uses less digits than its factorization.

611161103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261532.

The product of its (nonzero) digits is 216, while the sum is 23.

Adding to 611161103021 its reverse (120301161116), we get a palindrome (731462264137).

The spelling of 611161103021 in words is "six hundred eleven billion, one hundred sixty-one million, one hundred three thousand, twenty-one".