611664661041 has 16 divisors (see below), whose sum is σ = 932149296000. Its totient is φ = 349489340928.

The previous prime is 611664661039. The next prime is 611664661057. The reversal of 611664661041 is 140166466116.

It is not a de Polignac number, because 611664661041 - 2¹ = 611664661039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 611664660984 and 611664661002.

It is not an unprimeable number, because it can be changed into a prime (611664661021) 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, 1162066 + ... + 1604283.

It is an arithmetic number, because the mean of its divisors is an integer number (58259331000).

Almost surely, 2^611664661041 is an apocalyptic number.

It is an amenable number.

611664661041 is a deficient number, since it is larger than the sum of its proper divisors (320484634959).

611664661041 is a wasteful number, since it uses less digits than its factorization.

611664661041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2776888.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 611664661041 in words is "six hundred eleven billion, six hundred sixty-four million, six hundred sixty-one thousand, forty-one".