611403640193 has 4 divisors (see below), whose sum is σ = 611448619860. Its totient is φ = 611358660528.

The previous prime is 611403640171. The next prime is 611403640219. The reversal of 611403640193 is 391046304116.

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 243697233649 + 367706406544 = 493657^2 + 606388^2 .

It is a cyclic number.

It is not a de Polignac number, because 611403640193 - 2⁶ = 611403640129 is a prime.

It is a super-2 number, since 2×611403640193² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611403640123) 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, 22469438 + ... + 22496631.

It is an arithmetic number, because the mean of its divisors is an integer number (152862154965).

Almost surely, 2^611403640193 is an apocalyptic number.

It is an amenable number.

611403640193 is a deficient number, since it is larger than the sum of its proper divisors (44979667).

611403640193 is a wasteful number, since it uses less digits than its factorization.

611403640193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44979666.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 611403640193 in words is "six hundred eleven billion, four hundred three million, six hundred forty thousand, one hundred ninety-three".