611172838887 has 32 divisors (see below), whose sum is σ = 913723559616. Its totient is φ = 360917683200.

The previous prime is 611172838883. The next prime is 611172838901. The reversal of 611172838887 is 788838271116.

It is not a de Polignac number, because 611172838887 - 2² = 611172838883 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 611172838887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611172838883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3035428 + ... + 3230505.

It is an arithmetic number, because the mean of its divisors is an integer number (28553861238).

Almost surely, 2^611172838887 is an apocalyptic number.

611172838887 is a deficient number, since it is larger than the sum of its proper divisors (302550720729).

611172838887 is a wasteful number, since it uses less digits than its factorization.

611172838887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266051.

The product of its digits is 7225344, while the sum is 60.

The spelling of 611172838887 in words is "six hundred eleven billion, one hundred seventy-two million, eight hundred thirty-eight thousand, eight hundred eighty-seven".