611115620856066 has 32 divisors (see below), whose sum is σ = 1376637928269120. Its totient is φ = 200914724663712.

The previous prime is 611115620856001. The next prime is 611115620856067. The reversal of 611115620856066 is 660658026511116.

It is a happy number.

611115620856066 is a `hidden beast` number, since 6 + 1 + 1 + 1 + 1 + 5 + 6 + 20 + 8 + 5 + 606 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (611115620856067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77513392920 + ... + 77513400803.

It is an arithmetic number, because the mean of its divisors is an integer number (43019935258410).

Almost surely, 2^{611115620856066} is an apocalyptic number.

611115620856066 is an abundant number, since it is smaller than the sum of its proper divisors (765522307413054).

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

611115620856066 is a wasteful number, since it uses less digits than its factorization.

611115620856066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155026793807 (or 155026793801 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The spelling of 611115620856066 in words is "six hundred eleven trillion, one hundred fifteen billion, six hundred twenty million, eight hundred fifty-six thousand, sixty-six".