61668200186802 has 64 divisors (see below), whose sum is σ = 149508724060800. Its totient is φ = 18686076272640.

The previous prime is 61668200186731. The next prime is 61668200186867. The reversal of 61668200186802 is 20868100286616.

61668200186802 is a `hidden beast` number, since 616 + 6 + 8 + 2 + 0 + 0 + 18 + 6 + 8 + 0 + 2 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5364274 + ... + 12333362.

It is an arithmetic number, because the mean of its divisors is an integer number (2336073813450).

Almost surely, 2^{61668200186802} is an apocalyptic number.

61668200186802 is an abundant number, since it is smaller than the sum of its proper divisors (87840523873998).

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

61668200186802 is a wasteful number, since it uses less digits than its factorization.

61668200186802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984008 (or 6984002 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 61668200186802 in words is "sixty-one trillion, six hundred sixty-eight billion, two hundred million, one hundred eighty-six thousand, eight hundred two".