61504089109966 has 4 divisors (see below), whose sum is σ = 92256133664952. Its totient is φ = 30752044554982.

The previous prime is 61504089109937. The next prime is 61504089110017. The reversal of 61504089109966 is 66990198040516.

61504089109966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 61504089109898 and 61504089109907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15376022277490 + ... + 15376022277493.

It is an arithmetic number, because the mean of its divisors is an integer number (23064033416238).

Almost surely, 2^{61504089109966} is an apocalyptic number.

61504089109966 is a deficient number, since it is larger than the sum of its proper divisors (30752044554986).

61504089109966 is a wasteful number, since it uses less digits than its factorization.

61504089109966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30752044554985.

The product of its (nonzero) digits is 25194240, while the sum is 64.

The spelling of 61504089109966 in words is "sixty-one trillion, five hundred four billion, eighty-nine million, one hundred nine thousand, nine hundred sixty-six".