611172805642 has 16 divisors (see below), whose sum is σ = 1064900627712. Its totient is φ = 257637247920.

The previous prime is 611172805631. The next prime is 611172805651. The reversal of 611172805642 is 246508271116.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 357828658 + ... + 357830365.

It is an arithmetic number, because the mean of its divisors is an integer number (66556289232).

Almost surely, 2^611172805642 is an apocalyptic number.

611172805642 is a deficient number, since it is larger than the sum of its proper divisors (453727822070).

611172805642 is a wasteful number, since it uses less digits than its factorization.

611172805642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715659093.

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 611172805642 in words is "six hundred eleven billion, one hundred seventy-two million, eight hundred five thousand, six hundred forty-two".