611172278389 has 8 divisors (see below), whose sum is σ = 620363463552. Its totient is φ = 601997291280.

The previous prime is 611172278383. The next prime is 611172278393. The reversal of 611172278389 is 983872271116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611172278389 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 (611172278383) by changing a digit.

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, 3973474 + ... + 4124419.

It is an arithmetic number, because the mean of its divisors is an integer number (77545432944).

Almost surely, 2^611172278389 is an apocalyptic number.

It is an amenable number.

611172278389 is a deficient number, since it is larger than the sum of its proper divisors (9191185163).

611172278389 is a wasteful number, since it uses less digits than its factorization.

611172278389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8099027.

The product of its digits is 2032128, while the sum is 55.

The spelling of 611172278389 in words is "six hundred eleven billion, one hundred seventy-two million, two hundred seventy-eight thousand, three hundred eighty-nine".