61600100100066 has 48 divisors (see below), whose sum is σ = 151930681680960. Its totient is φ = 17855101476960.

The previous prime is 61600100100041. The next prime is 61600100100083. The reversal of 61600100100066 is 66000100100616.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6763291461 + ... + 6763300568.

It is an arithmetic number, because the mean of its divisors is an integer number (3165222535020).

Almost surely, 2^{61600100100066} is an apocalyptic number.

61600100100066 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61600100100066 is an abundant number, since it is smaller than the sum of its proper divisors (90330581580894).

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

61600100100066 is a wasteful number, since it uses less digits than its factorization.

61600100100066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13526592071 (or 13526592068 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The spelling of 61600100100066 in words is "sixty-one trillion, six hundred billion, one hundred million, one hundred thousand, sixty-six".