611918304366852 has 360 divisors, whose sum is σ = 1947515454428544. Its totient is φ = 166736059725312.

The previous prime is 611918304366847. The next prime is 611918304366911. The reversal of 611918304366852 is 258663403819116.

It is a happy number.

611918304366852 is a `hidden beast` number, since 6 + 1 + 1 + 91 + 8 + 3 + 0 + 436 + 68 + 52 = 666.

It is a super-2 number, since 2×611918304366852² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 611918304366852.

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 119 ways as a sum of consecutive naturals, for example, 120568513 + ... + 125541239.

Almost surely, 2^{611918304366852} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 611918304366852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973757727214272).

611918304366852 is an abundant number, since it is smaller than the sum of its proper divisors (1335597150061692).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

611918304366852 is a wasteful number, since it uses less digits than its factorization.

611918304366852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4973117 (or 4973099 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 611918304366852 in words is "six hundred eleven trillion, nine hundred eighteen billion, three hundred four million, three hundred sixty-six thousand, eight hundred fifty-two".